diff --git a/chat/__init__.py b/chat/__init__.py
new file mode 100644
index 0000000..80ea069
--- /dev/null
+++ b/chat/__init__.py
@@ -0,0 +1,2 @@
+# Copyright (C) 2024 by Animath
+# SPDX-License-Identifier: GPL-3.0-or-later
diff --git a/chat/admin.py b/chat/admin.py
new file mode 100644
index 0000000..757dcac
--- /dev/null
+++ b/chat/admin.py
@@ -0,0 +1,22 @@
+# Copyright (C) 2024 by Animath
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+from django.contrib import admin
+
+from .models import Channel, Message
+
+
+@admin.register(Channel)
+class ChannelAdmin(admin.ModelAdmin):
+    list_display = ('name', 'category', 'read_access', 'write_access', 'tournament', 'private',)
+    list_filter = ('category', 'read_access', 'write_access', 'tournament', 'private',)
+    search_fields = ('name', 'tournament__name', 'team__name', 'team__trigram',)
+    autocomplete_fields = ('tournament', 'pool', 'team', 'invited', )
+
+
+@admin.register(Message)
+class MessageAdmin(admin.ModelAdmin):
+    list_display = ('channel', 'author', 'created_at', 'updated_at', 'content',)
+    list_filter = ('channel', 'created_at', 'updated_at',)
+    search_fields = ('author__username', 'author__first_name', 'author__last_name', 'content',)
+    autocomplete_fields = ('channel', 'author', 'users_read',)
diff --git a/chat/apps.py b/chat/apps.py
new file mode 100644
index 0000000..ce683bf
--- /dev/null
+++ b/chat/apps.py
@@ -0,0 +1,16 @@
+# Copyright (C) 2024 by Animath
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+from django.apps import AppConfig
+from django.db.models.signals import post_save
+
+
+class ChatConfig(AppConfig):
+    default_auto_field = "django.db.models.BigAutoField"
+    name = "chat"
+
+    def ready(self):
+        from chat import signals
+        post_save.connect(signals.create_tournament_channels, "participation.Tournament")
+        post_save.connect(signals.create_pool_channels, "participation.Pool")
+        post_save.connect(signals.create_team_channel, "participation.Participation")
diff --git a/chat/consumers.py b/chat/consumers.py
new file mode 100644
index 0000000..168284e
--- /dev/null
+++ b/chat/consumers.py
@@ -0,0 +1,251 @@
+# Copyright (C) 2024 by Animath
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+from channels.generic.websocket import AsyncJsonWebsocketConsumer
+from django.contrib.auth.models import User
+from django.db.models import Count, F, Q
+from registration.models import Registration
+
+from .models import Channel, Message
+
+
+class ChatConsumer(AsyncJsonWebsocketConsumer):
+    """
+    This consumer manages the websocket of the chat interface.
+    """
+    async def connect(self) -> None:
+        """
+        This function is called when a new websocket is trying to connect to the server.
+        We accept only if this is a user of a team of the associated tournament, or a volunteer
+        of the tournament.
+        """
+        if '_fake_user_id' in self.scope['session']:
+            self.scope['user'] = await User.objects.aget(pk=self.scope['session']['_fake_user_id'])
+
+        # Fetch the registration of the current user
+        user = self.scope['user']
+        if user.is_anonymous:
+            # User is not authenticated
+            await self.close()
+            return
+
+        reg = await Registration.objects.aget(user_id=user.id)
+        self.registration = reg
+
+        # Accept the connection
+        await self.accept()
+
+        self.read_channels = await Channel.get_accessible_channels(user, 'read')
+        self.write_channels = await Channel.get_accessible_channels(user, 'write')
+
+        async for channel in self.read_channels.all():
+            await self.channel_layer.group_add(f"chat-{channel.id}", self.channel_name)
+        await self.channel_layer.group_add(f"user-{user.id}", self.channel_name)
+
+    async def disconnect(self, close_code) -> None:
+        """
+        Called when the websocket got disconnected, for any reason.
+        :param close_code: The error code.
+        """
+        if self.scope['user'].is_anonymous:
+            # User is not authenticated
+            return
+
+        async for channel in self.read_channels.all():
+            await self.channel_layer.group_discard(f"chat-{channel.id}", self.channel_name)
+        await self.channel_layer.group_discard(f"user-{self.scope['user'].id}", self.channel_name)
+
+    async def receive_json(self, content, **kwargs):
+        """
+        Called when the client sends us some data, parsed as JSON.
+        :param content: The sent data, decoded from JSON text. Must content a `type` field.
+        """
+        match content['type']:
+            case 'fetch_channels':
+                await self.fetch_channels()
+            case 'send_message':
+                await self.receive_message(**content)
+            case 'edit_message':
+                await self.edit_message(**content)
+            case 'delete_message':
+                await self.delete_message(**content)
+            case 'fetch_messages':
+                await self.fetch_messages(**content)
+            case 'mark_read':
+                await self.mark_read(**content)
+            case 'start_private_chat':
+                await self.start_private_chat(**content)
+            case unknown:
+                print("Unknown message type:", unknown)
+
+    async def fetch_channels(self) -> None:
+        user = self.scope['user']
+
+        message = {
+            'type': 'fetch_channels',
+            'channels': [
+                {
+                    'id': channel.id,
+                    'name': channel.get_visible_name(user),
+                    'category': channel.category,
+                    'read_access': True,
+                    'write_access': await self.write_channels.acontains(channel),
+                    'unread_messages': channel.unread_messages,
+                }
+                async for channel in self.read_channels.prefetch_related('invited')
+                .annotate(total_messages=Count('messages', distinct=True))
+                .annotate(read_messages=Count('messages', filter=Q(messages__users_read=user), distinct=True))
+                .annotate(unread_messages=F('total_messages') - F('read_messages')).all()
+            ]
+        }
+        await self.send_json(message)
+
+    async def receive_message(self, channel_id: int, content: str, **kwargs) -> None:
+        user = self.scope['user']
+        channel = await Channel.objects.prefetch_related('tournament__pools__juries', 'pool', 'team', 'invited') \
+            .aget(id=channel_id)
+        if not await self.write_channels.acontains(channel):
+            return
+
+        message = await Message.objects.acreate(
+            author=user,
+            channel=channel,
+            content=content,
+        )
+
+        await self.channel_layer.group_send(f'chat-{channel.id}', {
+            'type': 'chat.send_message',
+            'id': message.id,
+            'channel_id': channel.id,
+            'timestamp': message.created_at.isoformat(),
+            'author_id': message.author_id,
+            'author': await message.aget_author_name(),
+            'content': message.content,
+        })
+
+    async def edit_message(self, message_id: int, content: str, **kwargs) -> None:
+        message = await Message.objects.aget(id=message_id)
+        user = self.scope['user']
+        if user.id != message.author_id and not user.is_superuser:
+            return
+
+        message.content = content
+        await message.asave()
+
+        await self.channel_layer.group_send(f'chat-{message.channel_id}', {
+            'type': 'chat.edit_message',
+            'id': message_id,
+            'channel_id': message.channel_id,
+            'content': content,
+        })
+
+    async def delete_message(self, message_id: int, **kwargs) -> None:
+        message = await Message.objects.aget(id=message_id)
+        user = self.scope['user']
+        if user.id != message.author_id and not user.is_superuser:
+            return
+
+        await message.adelete()
+
+        await self.channel_layer.group_send(f'chat-{message.channel_id}', {
+            'type': 'chat.delete_message',
+            'id': message_id,
+            'channel_id': message.channel_id,
+        })
+
+    async def fetch_messages(self, channel_id: int, offset: int = 0, limit: int = 50, **_kwargs) -> None:
+        channel = await Channel.objects.aget(id=channel_id)
+        if not await self.read_channels.acontains(channel):
+            return
+
+        limit = min(limit, 200)  # Fetch only maximum 200 messages at the time
+
+        messages = Message.objects \
+            .filter(channel=channel) \
+            .annotate(read=Count('users_read', filter=Q(users_read=self.scope['user']))) \
+            .order_by('-created_at')[offset:offset + limit].all()
+        await self.send_json({
+            'type': 'fetch_messages',
+            'channel_id': channel_id,
+            'messages': list(reversed([
+                {
+                    'id': message.id,
+                    'timestamp': message.created_at.isoformat(),
+                    'author_id': message.author_id,
+                    'author': await message.aget_author_name(),
+                    'content': message.content,
+                    'read': message.read > 0,
+                }
+                async for message in messages
+            ]))
+        })
+
+    async def mark_read(self, message_ids: list[int], **_kwargs) -> None:
+        messages = Message.objects.filter(id__in=message_ids)
+        async for message in messages.all():
+            await message.users_read.aadd(self.scope['user'])
+
+        unread_messages_by_channel = Message.objects.exclude(users_read=self.scope['user']).values('channel_id') \
+            .annotate(unread_messages=Count('channel_id'))
+
+        await self.send_json({
+            'type': 'mark_read',
+            'messages': [{'id': message.id, 'channel_id': message.channel_id} async for message in messages.all()],
+            'unread_messages': {group['channel_id']: group['unread_messages']
+                                async for group in unread_messages_by_channel.all()},
+        })
+
+    async def start_private_chat(self, user_id: int, **kwargs) -> None:
+        user = self.scope['user']
+        other_user = await User.objects.aget(id=user_id)
+        channel_qs = Channel.objects.filter(private=True).filter(invited=user).filter(invited=other_user)
+        if not await channel_qs.aexists():
+            channel = await Channel.objects.acreate(
+                name=f"{user.first_name} {user.last_name}, {other_user.first_name} {other_user.last_name}",
+                category=Channel.ChannelCategory.PRIVATE,
+                private=True,
+            )
+            await channel.invited.aset([user, other_user])
+
+            await self.channel_layer.group_add(f"chat-{channel.id}", self.channel_name)
+
+            if user != other_user:
+                await self.channel_layer.group_send(f"user-{other_user.id}", {
+                    'type': 'chat.start_private_chat',
+                    'channel': {
+                        'id': channel.id,
+                        'name': f"{user.first_name} {user.last_name}",
+                        'category': channel.category,
+                        'read_access': True,
+                        'write_access': True,
+                    }
+                })
+        else:
+            channel = await channel_qs.afirst()
+
+        await self.channel_layer.group_send(f"user-{user.id}", {
+            'type': 'chat.start_private_chat',
+            'channel': {
+                'id': channel.id,
+                'name': f"{other_user.first_name} {other_user.last_name}",
+                'category': channel.category,
+                'read_access': True,
+                'write_access': True,
+            }
+        })
+
+    async def chat_send_message(self, message) -> None:
+        await self.send_json({'type': 'send_message', 'id': message['id'], 'channel_id': message['channel_id'],
+                              'timestamp': message['timestamp'], 'author': message['author'],
+                              'content': message['content']})
+
+    async def chat_edit_message(self, message) -> None:
+        await self.send_json({'type': 'edit_message', 'id': message['id'], 'channel_id': message['channel_id'],
+                              'content': message['content']})
+
+    async def chat_delete_message(self, message) -> None:
+        await self.send_json({'type': 'delete_message', 'id': message['id'], 'channel_id': message['channel_id']})
+
+    async def chat_start_private_chat(self, message) -> None:
+        await self.channel_layer.group_add(f"chat-{message['channel']['id']}", self.channel_name)
+        await self.send_json({'type': 'start_private_chat', 'channel': message['channel']})
diff --git a/chat/management/__init__.py b/chat/management/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/chat/management/commands/__init__.py b/chat/management/commands/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/chat/management/commands/create_chat_channels.py b/chat/management/commands/create_chat_channels.py
new file mode 100644
index 0000000..666ee3f
--- /dev/null
+++ b/chat/management/commands/create_chat_channels.py
@@ -0,0 +1,143 @@
+# Copyright (C) 2024 by Animath
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+from django.core.management import BaseCommand
+from django.utils.translation import activate
+from participation.models import Team, Tournament
+from tfjm.permissions import PermissionType
+
+from ...models import Channel
+
+
+class Command(BaseCommand):
+    def handle(self, *args, **kwargs):
+        activate('fr')
+
+        Channel.objects.update_or_create(
+            name="Annonces",
+            defaults=dict(
+                category=Channel.ChannelCategory.GENERAL,
+                read_access=PermissionType.AUTHENTICATED,
+                write_access=PermissionType.ADMIN,
+            ),
+        )
+
+        Channel.objects.update_or_create(
+            name="Aide jurys et orgas",
+            defaults=dict(
+                category=Channel.ChannelCategory.GENERAL,
+                read_access=PermissionType.VOLUNTEER,
+                write_access=PermissionType.VOLUNTEER,
+            ),
+        )
+
+        Channel.objects.update_or_create(
+            name="Général",
+            defaults=dict(
+                category=Channel.ChannelCategory.GENERAL,
+                read_access=PermissionType.AUTHENTICATED,
+                write_access=PermissionType.AUTHENTICATED,
+            ),
+        )
+
+        Channel.objects.update_or_create(
+            name="Je cherche une équipe",
+            defaults=dict(
+                category=Channel.ChannelCategory.GENERAL,
+                read_access=PermissionType.AUTHENTICATED,
+                write_access=PermissionType.AUTHENTICATED,
+            ),
+        )
+
+        Channel.objects.update_or_create(
+            name="Détente",
+            defaults=dict(
+                category=Channel.ChannelCategory.GENERAL,
+                read_access=PermissionType.AUTHENTICATED,
+                write_access=PermissionType.AUTHENTICATED,
+            ),
+        )
+
+        for tournament in Tournament.objects.all():
+            Channel.objects.update_or_create(
+                name=f"{tournament.name} - Annonces",
+                defaults=dict(
+                    category=Channel.ChannelCategory.TOURNAMENT,
+                    read_access=PermissionType.TOURNAMENT_MEMBER,
+                    write_access=PermissionType.TOURNAMENT_ORGANIZER,
+                    tournament=tournament,
+                ),
+            )
+
+            Channel.objects.update_or_create(
+                name=f"{tournament.name} - Général",
+                defaults=dict(
+                    category=Channel.ChannelCategory.TOURNAMENT,
+                    read_access=PermissionType.TOURNAMENT_MEMBER,
+                    write_access=PermissionType.TOURNAMENT_MEMBER,
+                    tournament=tournament,
+                ),
+            )
+
+            Channel.objects.update_or_create(
+                name=f"{tournament.name} - Détente",
+                defaults=dict(
+                    category=Channel.ChannelCategory.TOURNAMENT,
+                    read_access=PermissionType.TOURNAMENT_MEMBER,
+                    write_access=PermissionType.TOURNAMENT_MEMBER,
+                    tournament=tournament,
+                ),
+            )
+
+            Channel.objects.update_or_create(
+                name=f"{tournament.name} - Juré⋅es",
+                defaults=dict(
+                    category=Channel.ChannelCategory.TOURNAMENT,
+                    read_access=PermissionType.JURY_MEMBER,
+                    write_access=PermissionType.JURY_MEMBER,
+                    tournament=tournament,
+                ),
+            )
+
+            if tournament.remote:
+                Channel.objects.update_or_create(
+                    name=f"{tournament.name} - Président⋅es de jury",
+                    defaults=dict(
+                        category=Channel.ChannelCategory.TOURNAMENT,
+                        read_access=PermissionType.TOURNAMENT_JURY_PRESIDENT,
+                        write_access=PermissionType.TOURNAMENT_JURY_PRESIDENT,
+                        tournament=tournament,
+                    ),
+                )
+
+                for pool in tournament.pools.all():
+                    Channel.objects.update_or_create(
+                        name=f"{tournament.name} - Poule {pool.short_name}",
+                        defaults=dict(
+                            category=Channel.ChannelCategory.TOURNAMENT,
+                            read_access=PermissionType.POOL_MEMBER,
+                            write_access=PermissionType.POOL_MEMBER,
+                            pool=pool,
+                        ),
+                    )
+
+                    Channel.objects.update_or_create(
+                        name=f"{tournament.name} - Poule {pool.short_name} - Jury",
+                        defaults=dict(
+                            category=Channel.ChannelCategory.TOURNAMENT,
+                            read_access=PermissionType.JURY_MEMBER,
+                            write_access=PermissionType.JURY_MEMBER,
+                            pool=pool,
+                        ),
+                    )
+
+        for team in Team.objects.filter(participation__valid=True).all():
+            Channel.objects.update_or_create(
+                name=f"Équipe {team.trigram}",
+                defaults=dict(
+                    category=Channel.ChannelCategory.TEAM,
+                    read_access=PermissionType.TEAM_MEMBER,
+                    write_access=PermissionType.TEAM_MEMBER,
+                    team=team,
+                ),
+            )
diff --git a/chat/migrations/0001_initial.py b/chat/migrations/0001_initial.py
new file mode 100644
index 0000000..294bd7e
--- /dev/null
+++ b/chat/migrations/0001_initial.py
@@ -0,0 +1,200 @@
+# Generated by Django 5.0.3 on 2024-04-27 07:00
+
+import django.db.models.deletion
+from django.conf import settings
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    initial = True
+
+    dependencies = [
+        ("participation", "0013_alter_pool_options_pool_room"),
+        migrations.swappable_dependency(settings.AUTH_USER_MODEL),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name="Channel",
+            fields=[
+                (
+                    "id",
+                    models.BigAutoField(
+                        auto_created=True,
+                        primary_key=True,
+                        serialize=False,
+                        verbose_name="ID",
+                    ),
+                ),
+                ("name", models.CharField(max_length=255, verbose_name="name")),
+                (
+                    "read_access",
+                    models.CharField(
+                        choices=[
+                            ("anonymous", "Everyone, including anonymous users"),
+                            ("authenticated", "Authenticated users"),
+                            ("volunteer", "All volunteers"),
+                            ("tournament", "All members of a given tournament"),
+                            ("organizer", "Tournament organizers only"),
+                            (
+                                "jury_president",
+                                "Tournament organizers and jury presidents of the tournament",
+                            ),
+                            ("jury", "Jury members of the pool"),
+                            ("pool", "Jury members and participants of the pool"),
+                            (
+                                "team",
+                                "Members of the team and organizers of concerned tournaments",
+                            ),
+                            (
+                                "private",
+                                "Private, reserved to explicit authorized users",
+                            ),
+                            ("admin", "Admin users"),
+                        ],
+                        max_length=16,
+                        verbose_name="read permission",
+                    ),
+                ),
+                (
+                    "write_access",
+                    models.CharField(
+                        choices=[
+                            ("anonymous", "Everyone, including anonymous users"),
+                            ("authenticated", "Authenticated users"),
+                            ("volunteer", "All volunteers"),
+                            ("tournament", "All members of a given tournament"),
+                            ("organizer", "Tournament organizers only"),
+                            (
+                                "jury_president",
+                                "Tournament organizers and jury presidents of the tournament",
+                            ),
+                            ("jury", "Jury members of the pool"),
+                            ("pool", "Jury members and participants of the pool"),
+                            (
+                                "team",
+                                "Members of the team and organizers of concerned tournaments",
+                            ),
+                            (
+                                "private",
+                                "Private, reserved to explicit authorized users",
+                            ),
+                            ("admin", "Admin users"),
+                        ],
+                        max_length=16,
+                        verbose_name="write permission",
+                    ),
+                ),
+                (
+                    "private",
+                    models.BooleanField(
+                        default=False,
+                        help_text="If checked, only users who have been explicitly added to the channel will be able to access it.",
+                        verbose_name="private",
+                    ),
+                ),
+                (
+                    "invited",
+                    models.ManyToManyField(
+                        blank=True,
+                        help_text="Extra users who have been invited to the channel, in addition to the permitted group of the channel.",
+                        related_name="+",
+                        to=settings.AUTH_USER_MODEL,
+                        verbose_name="invited users",
+                    ),
+                ),
+                (
+                    "pool",
+                    models.ForeignKey(
+                        blank=True,
+                        default=None,
+                        help_text="For a permission that concerns a pool, indicates what is the concerned pool.",
+                        null=True,
+                        on_delete=django.db.models.deletion.CASCADE,
+                        related_name="chat_channels",
+                        to="participation.pool",
+                        verbose_name="pool",
+                    ),
+                ),
+                (
+                    "team",
+                    models.ForeignKey(
+                        blank=True,
+                        default=None,
+                        help_text="For a permission that concerns a team, indicates what is the concerned team.",
+                        null=True,
+                        on_delete=django.db.models.deletion.CASCADE,
+                        related_name="chat_channels",
+                        to="participation.team",
+                        verbose_name="team",
+                    ),
+                ),
+                (
+                    "tournament",
+                    models.ForeignKey(
+                        blank=True,
+                        default=None,
+                        help_text="For a permission that concerns a tournament, indicates what is the concerned tournament.",
+                        null=True,
+                        on_delete=django.db.models.deletion.CASCADE,
+                        related_name="chat_channels",
+                        to="participation.tournament",
+                        verbose_name="tournament",
+                    ),
+                ),
+            ],
+            options={
+                "verbose_name": "channel",
+                "verbose_name_plural": "channels",
+                "ordering": ("name",),
+            },
+        ),
+        migrations.CreateModel(
+            name="Message",
+            fields=[
+                (
+                    "id",
+                    models.BigAutoField(
+                        auto_created=True,
+                        primary_key=True,
+                        serialize=False,
+                        verbose_name="ID",
+                    ),
+                ),
+                (
+                    "created_at",
+                    models.DateTimeField(auto_now_add=True, verbose_name="created at"),
+                ),
+                (
+                    "updated_at",
+                    models.DateTimeField(auto_now=True, verbose_name="updated at"),
+                ),
+                ("content", models.TextField(verbose_name="content")),
+                (
+                    "author",
+                    models.ForeignKey(
+                        null=True,
+                        on_delete=django.db.models.deletion.SET_NULL,
+                        related_name="chat_messages",
+                        to=settings.AUTH_USER_MODEL,
+                        verbose_name="author",
+                    ),
+                ),
+                (
+                    "channel",
+                    models.ForeignKey(
+                        on_delete=django.db.models.deletion.CASCADE,
+                        related_name="messages",
+                        to="chat.channel",
+                        verbose_name="channel",
+                    ),
+                ),
+            ],
+            options={
+                "verbose_name": "message",
+                "verbose_name_plural": "messages",
+                "ordering": ("created_at",),
+            },
+        ),
+    ]
diff --git a/chat/migrations/0002_alter_channel_options_channel_category.py b/chat/migrations/0002_alter_channel_options_channel_category.py
new file mode 100644
index 0000000..82898dd
--- /dev/null
+++ b/chat/migrations/0002_alter_channel_options_channel_category.py
@@ -0,0 +1,36 @@
+# Generated by Django 5.0.3 on 2024-04-28 11:08
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("chat", "0001_initial"),
+    ]
+
+    operations = [
+        migrations.AlterModelOptions(
+            name="channel",
+            options={
+                "ordering": ("category", "name"),
+                "verbose_name": "channel",
+                "verbose_name_plural": "channels",
+            },
+        ),
+        migrations.AddField(
+            model_name="channel",
+            name="category",
+            field=models.CharField(
+                choices=[
+                    ("general", "General channels"),
+                    ("tournament", "Tournament channels"),
+                    ("team", "Team channels"),
+                    ("private", "Private channels"),
+                ],
+                default="general",
+                max_length=255,
+                verbose_name="category",
+            ),
+        ),
+    ]
diff --git a/chat/migrations/0003_message_users_read.py b/chat/migrations/0003_message_users_read.py
new file mode 100644
index 0000000..16f9434
--- /dev/null
+++ b/chat/migrations/0003_message_users_read.py
@@ -0,0 +1,26 @@
+# Generated by Django 5.0.3 on 2024-04-28 18:52
+
+from django.conf import settings
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("chat", "0002_alter_channel_options_channel_category"),
+        migrations.swappable_dependency(settings.AUTH_USER_MODEL),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name="message",
+            name="users_read",
+            field=models.ManyToManyField(
+                blank=True,
+                help_text="Users who have read the message.",
+                related_name="+",
+                to=settings.AUTH_USER_MODEL,
+                verbose_name="users read",
+            ),
+        ),
+    ]
diff --git a/chat/migrations/__init__.py b/chat/migrations/__init__.py
new file mode 100644
index 0000000..80ea069
--- /dev/null
+++ b/chat/migrations/__init__.py
@@ -0,0 +1,2 @@
+# Copyright (C) 2024 by Animath
+# SPDX-License-Identifier: GPL-3.0-or-later
diff --git a/chat/models.py b/chat/models.py
new file mode 100644
index 0000000..833890f
--- /dev/null
+++ b/chat/models.py
@@ -0,0 +1,273 @@
+# Copyright (C) 2024 by Animath
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+from asgiref.sync import sync_to_async
+from django.contrib.auth.models import User
+from django.db import models
+from django.db.models import Q, QuerySet
+from django.utils.text import format_lazy
+from django.utils.translation import gettext_lazy as _
+from participation.models import Pool, Team, Tournament
+from registration.models import ParticipantRegistration, Registration, VolunteerRegistration
+from tfjm.permissions import PermissionType
+
+
+class Channel(models.Model):
+    class ChannelCategory(models.TextChoices):
+        GENERAL = 'general', _("General channels")
+        TOURNAMENT = 'tournament', _("Tournament channels")
+        TEAM = 'team', _("Team channels")
+        PRIVATE = 'private', _("Private channels")
+
+    name = models.CharField(
+        max_length=255,
+        verbose_name=_("name"),
+    )
+
+    category = models.CharField(
+        max_length=255,
+        verbose_name=_("category"),
+        choices=ChannelCategory,
+        default=ChannelCategory.GENERAL,
+    )
+
+    read_access = models.CharField(
+        max_length=16,
+        verbose_name=_("read permission"),
+        choices=PermissionType,
+    )
+
+    write_access = models.CharField(
+        max_length=16,
+        verbose_name=_("write permission"),
+        choices=PermissionType,
+    )
+
+    tournament = models.ForeignKey(
+        'participation.Tournament',
+        on_delete=models.CASCADE,
+        blank=True,
+        null=True,
+        default=None,
+        verbose_name=_("tournament"),
+        related_name='chat_channels',
+        help_text=_("For a permission that concerns a tournament, indicates what is the concerned tournament."),
+    )
+
+    pool = models.ForeignKey(
+        'participation.Pool',
+        on_delete=models.CASCADE,
+        blank=True,
+        null=True,
+        default=None,
+        verbose_name=_("pool"),
+        related_name='chat_channels',
+        help_text=_("For a permission that concerns a pool, indicates what is the concerned pool."),
+    )
+
+    team = models.ForeignKey(
+        'participation.Team',
+        on_delete=models.CASCADE,
+        blank=True,
+        null=True,
+        default=None,
+        verbose_name=_("team"),
+        related_name='chat_channels',
+        help_text=_("For a permission that concerns a team, indicates what is the concerned team."),
+    )
+
+    private = models.BooleanField(
+        verbose_name=_("private"),
+        default=False,
+        help_text=_("If checked, only users who have been explicitly added to the channel will be able to access it."),
+    )
+
+    invited = models.ManyToManyField(
+        'auth.User',
+        verbose_name=_("invited users"),
+        related_name='+',
+        blank=True,
+        help_text=_("Extra users who have been invited to the channel, "
+                    "in addition to the permitted group of the channel."),
+    )
+
+    def get_visible_name(self, user: User) -> str:
+        if self.private:
+            users = [f"{u.first_name} {u.last_name}" for u in self.invited.all() if u != user] \
+                    or [f"{user.first_name} {user.last_name}"]
+            return ", ".join(users)
+        return self.name
+
+    def __str__(self):
+        return str(format_lazy(_("Channel {name}"), name=self.name))
+
+    @staticmethod
+    async def get_accessible_channels(user: User, permission_type: str = 'read') -> QuerySet["Channel"]:
+        permission_type = 'write_access' if 'write' in permission_type.lower() else 'read_access'
+
+        qs = Channel.objects.none()
+        if user.is_anonymous:
+            return Channel.objects.filter(**{permission_type: PermissionType.ANONYMOUS})
+
+        qs |= Channel.objects.filter(**{permission_type: PermissionType.AUTHENTICATED})
+        registration = await Registration.objects.prefetch_related('user').aget(user_id=user.id)
+
+        if registration.is_admin:
+            return Channel.objects.prefetch_related('invited').exclude(~Q(invited=user) & Q(private=True)).all()
+
+        if registration.is_volunteer:
+            registration = await VolunteerRegistration.objects \
+                .prefetch_related('jury_in__tournament', 'organized_tournaments').aget(user_id=user.id)
+
+            qs |= Channel.objects.filter(**{permission_type: PermissionType.VOLUNTEER})
+
+            qs |= Channel.objects.filter(Q(tournament__in=registration.interesting_tournaments),
+                                         **{permission_type: PermissionType.TOURNAMENT_MEMBER})
+
+            qs |= Channel.objects.filter(Q(tournament__in=registration.organized_tournaments.all()),
+                                         **{permission_type: PermissionType.TOURNAMENT_ORGANIZER})
+
+            qs |= Channel.objects.filter(Q(tournament__pools__in=registration.pools_presided.all())
+                                         | Q(tournament__in=registration.organized_tournaments.all()),
+                                         **{permission_type: PermissionType.TOURNAMENT_JURY_PRESIDENT})
+
+            qs |= Channel.objects.filter(Q(pool__in=registration.jury_in.all())
+                                         | Q(pool__tournament__in=registration.organized_tournaments.all())
+                                         | Q(pool__tournament__pools__in=registration.pools_presided.all()),
+                                         **{permission_type: PermissionType.JURY_MEMBER})
+
+            qs |= Channel.objects.filter(Q(pool__in=registration.jury_in.all())
+                                         | Q(pool__tournament__in=registration.organized_tournaments.all())
+                                         | Q(pool__tournament__pools__in=registration.pools_presided.all()),
+                                         **{permission_type: PermissionType.POOL_MEMBER})
+        else:
+            registration = await ParticipantRegistration.objects \
+                .prefetch_related('team__participation__pools', 'team__participation__tournament').aget(user_id=user.id)
+
+            team = registration.team
+            tournaments = []
+            if team.participation.valid:
+                tournaments.append(team.participation.tournament)
+            if team.participation.final:
+                tournaments.append(await Tournament.objects.aget(final=True))
+
+            qs |= Channel.objects.filter(Q(tournament__in=tournaments),
+                                         **{permission_type: PermissionType.TOURNAMENT_MEMBER})
+
+            qs |= Channel.objects.filter(Q(pool__in=team.participation.pools.all()),
+                                         **{permission_type: PermissionType.POOL_MEMBER})
+
+            qs |= Channel.objects.filter(Q(team=team),
+                                         **{permission_type: PermissionType.TEAM_MEMBER})
+
+        qs |= Channel.objects.filter(invited=user).prefetch_related('invited')
+
+        return qs
+
+    class Meta:
+        verbose_name = _("channel")
+        verbose_name_plural = _("channels")
+        ordering = ('category', 'name',)
+
+
+class Message(models.Model):
+    channel = models.ForeignKey(
+        Channel,
+        on_delete=models.CASCADE,
+        verbose_name=_("channel"),
+        related_name='messages',
+    )
+
+    author = models.ForeignKey(
+        'auth.User',
+        verbose_name=_("author"),
+        on_delete=models.SET_NULL,
+        null=True,
+        related_name='chat_messages',
+    )
+
+    created_at = models.DateTimeField(
+        verbose_name=_("created at"),
+        auto_now_add=True,
+    )
+
+    updated_at = models.DateTimeField(
+        verbose_name=_("updated at"),
+        auto_now=True,
+    )
+
+    content = models.TextField(
+        verbose_name=_("content"),
+    )
+
+    users_read = models.ManyToManyField(
+        'auth.User',
+        verbose_name=_("users read"),
+        related_name='+',
+        blank=True,
+        help_text=_("Users who have read the message."),
+    )
+
+    def get_author_name(self):
+        registration = self.author.registration
+
+        author_name = f"{self.author.first_name} {self.author.last_name}"
+        if registration.is_volunteer:
+            if registration.is_admin:
+                author_name += " (CNO)"
+
+            if self.channel.pool:
+                if registration == self.channel.pool.jury_president:
+                    author_name += " (P. jury)"
+                elif registration in self.channel.pool.juries.all():
+                    author_name += " (Juré⋅e)"
+                elif registration in self.channel.pool.tournament.organizers.all():
+                    author_name += " (CRO)"
+                else:
+                    author_name += " (Bénévole)"
+            elif self.channel.tournament:
+                if registration in self.channel.tournament.organizers.all():
+                    author_name += " (CRO)"
+                elif any([registration.id == pool.jury_president
+                          for pool in self.channel.tournament.pools.all()]):
+                    pools = ", ".join([pool.short_name
+                                       for pool in self.channel.tournament.pools.all()
+                                       if pool.jury_president == registration])
+                    author_name += f" (P. jury {pools})"
+                elif any([pool.juries.contains(registration)
+                          for pool in self.channel.tournament.pools.all()]):
+                    pools = ", ".join([pool.short_name
+                                       for pool in self.channel.tournament.pools.all()
+                                       if pool.juries.acontains(registration)])
+                    author_name += f" (Juré⋅e {pools})"
+                else:
+                    author_name += " (Bénévole)"
+            else:
+                if registration.organized_tournaments.exists():
+                    tournaments = ", ".join([tournament.name
+                                             for tournament in registration.organized_tournaments.all()])
+                    author_name += f" (CRO {tournaments})"
+                if Pool.objects.filter(jury_president=registration).exists():
+                    tournaments = Tournament.objects.filter(pools__jury_president=registration).distinct()
+                    tournaments = ", ".join([tournament.name for tournament in tournaments])
+                    author_name += f" (P. jury {tournaments})"
+                elif registration.jury_in.exists():
+                    tournaments = Tournament.objects.filter(pools__juries=registration).distinct()
+                    tournaments = ", ".join([tournament.name for tournament in tournaments])
+                    author_name += f" (Juré⋅e {tournaments})"
+        else:
+            if registration.team_id:
+                team = Team.objects.get(id=registration.team_id)
+                author_name += f" ({team.trigram})"
+            else:
+                author_name += " (sans équipe)"
+
+        return author_name
+
+    async def aget_author_name(self):
+        return await sync_to_async(self.get_author_name)()
+
+    class Meta:
+        verbose_name = _("message")
+        verbose_name_plural = _("messages")
+        ordering = ('created_at',)
diff --git a/chat/signals.py b/chat/signals.py
new file mode 100644
index 0000000..72056e3
--- /dev/null
+++ b/chat/signals.py
@@ -0,0 +1,100 @@
+# Copyright (C) 2024 by Animath
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+from chat.models import Channel
+from participation.models import Participation, Pool, Tournament
+from tfjm.permissions import PermissionType
+
+
+def create_tournament_channels(instance: Tournament, **_kwargs):
+    tournament = instance
+
+    Channel.objects.update_or_create(
+        name=f"{tournament.name} - Annonces",
+        defaults=dict(
+            category=Channel.ChannelCategory.TOURNAMENT,
+            read_access=PermissionType.TOURNAMENT_MEMBER,
+            write_access=PermissionType.TOURNAMENT_ORGANIZER,
+            tournament=tournament,
+        ),
+    )
+
+    Channel.objects.update_or_create(
+        name=f"{tournament.name} - Général",
+        defaults=dict(
+            category=Channel.ChannelCategory.TOURNAMENT,
+            read_access=PermissionType.TOURNAMENT_MEMBER,
+            write_access=PermissionType.TOURNAMENT_MEMBER,
+            tournament=tournament,
+        ),
+    )
+
+    Channel.objects.update_or_create(
+        name=f"{tournament.name} - Détente",
+        defaults=dict(
+            category=Channel.ChannelCategory.TOURNAMENT,
+            read_access=PermissionType.TOURNAMENT_MEMBER,
+            write_access=PermissionType.TOURNAMENT_MEMBER,
+            tournament=tournament,
+        ),
+    )
+
+    Channel.objects.update_or_create(
+        name=f"{tournament.name} - Juré⋅es",
+        defaults=dict(
+            category=Channel.ChannelCategory.TOURNAMENT,
+            read_access=PermissionType.JURY_MEMBER,
+            write_access=PermissionType.JURY_MEMBER,
+            tournament=tournament,
+        ),
+    )
+
+    if tournament.remote:
+        Channel.objects.update_or_create(
+            name=f"{tournament.name} - Président⋅es de jury",
+            defaults=dict(
+                category=Channel.ChannelCategory.TOURNAMENT,
+                read_access=PermissionType.TOURNAMENT_JURY_PRESIDENT,
+                write_access=PermissionType.TOURNAMENT_JURY_PRESIDENT,
+                tournament=tournament,
+            ),
+        )
+
+
+def create_pool_channels(instance: Pool, **_kwargs):
+    pool = instance
+    tournament = pool.tournament
+
+    if tournament.remote:
+        Channel.objects.update_or_create(
+            name=f"{tournament.name} - Poule {pool.short_name}",
+            defaults=dict(
+                category=Channel.ChannelCategory.TOURNAMENT,
+                read_access=PermissionType.POOL_MEMBER,
+                write_access=PermissionType.POOL_MEMBER,
+                pool=pool,
+            ),
+        )
+
+        Channel.objects.update_or_create(
+            name=f"{tournament.name} - Poule {pool.short_name} - Jury",
+            defaults=dict(
+                category=Channel.ChannelCategory.TOURNAMENT,
+                read_access=PermissionType.JURY_MEMBER,
+                write_access=PermissionType.JURY_MEMBER,
+                pool=pool,
+            ),
+        )
+
+
+def create_team_channel(instance: Participation, **_kwargs):
+    if instance.valid:
+        Channel.objects.update_or_create(
+            name=f"Équipe {instance.team.trigram}",
+            defaults=dict(
+                category=Channel.ChannelCategory.TEAM,
+                read_access=PermissionType.TEAM_MEMBER,
+                write_access=PermissionType.TEAM_MEMBER,
+                team=instance.team,
+            ),
+        )
diff --git a/chat/static/chat.js b/chat/static/chat.js
new file mode 100644
index 0000000..89ab947
--- /dev/null
+++ b/chat/static/chat.js
@@ -0,0 +1,576 @@
+(async () => {
+    // check notification permission
+    // This is useful to alert people that they should do something
+    await Notification.requestPermission()
+})()
+
+const MAX_MESSAGES = 50
+
+const channel_categories = ['general', 'tournament', 'team', 'private']
+let channels = {}
+let messages = {}
+let selected_channel_id = null
+
+/**
+ * Display a new notification with the given title and the given body.
+ * @param title The title of the notification
+ * @param body The body of the notification
+ * @param timeout The time (in milliseconds) after that the notification automatically closes. 0 to make indefinite. Default to 5000 ms.
+ * @return Notification
+ */
+function showNotification(title, body, timeout = 5000) {
+    Notification.requestPermission().then((status) => {
+        if (status === 'granted')
+            new Notification(title, {'body': body, 'icon': "/static/tfjm-192.png"})
+    })
+}
+
+function selectChannel(channel_id) {
+    let channel = channels[channel_id]
+    if (!channel) {
+        console.error('Channel not found:', channel_id)
+        return
+    }
+
+    selected_channel_id = channel_id
+    localStorage.setItem('chat.last-channel-id', channel_id)
+
+    let channelTitle = document.getElementById('channel-title')
+    channelTitle.innerText = channel['name']
+
+    let messageInput = document.getElementById('input-message')
+    messageInput.disabled = !channel['write_access']
+
+    redrawMessages()
+}
+
+function sendMessage() {
+    let messageInput = document.getElementById('input-message')
+    let message = messageInput.value
+    messageInput.value = ''
+
+    if (!message) {
+        return
+    }
+
+    socket.send(JSON.stringify({
+        'type': 'send_message',
+        'channel_id': selected_channel_id,
+        'content': message,
+    }))
+}
+
+function setChannels(new_channels) {
+    channels = {}
+    let categoryLists = {}
+    for (let category of channel_categories) {
+        categoryLists[category] = document.getElementById(`nav-${category}-channels-tab`)
+        categoryLists[category].innerHTML = ''
+        categoryLists[category].parentElement.classList.add('d-none')
+    }
+
+    for (let channel of new_channels)
+        addChannel(channel, categoryLists)
+
+    if (new_channels && (!selected_channel_id || !channels[selected_channel_id])) {
+        let last_channel_id = parseInt(localStorage.getItem('chat.last-channel-id'))
+        if (last_channel_id && channels[last_channel_id])
+            selectChannel(last_channel_id)
+        else
+            selectChannel(Object.keys(channels)[0])
+    }
+}
+
+async function addChannel(channel, categoryLists) {
+    channels[channel['id']] = channel
+    if (!messages[channel['id']])
+        messages[channel['id']] = new Map()
+
+    let categoryList = categoryLists[channel['category']]
+    categoryList.parentElement.classList.remove('d-none')
+
+    let navItem = document.createElement('li')
+    navItem.classList.add('list-group-item', 'tab-channel')
+    navItem.id = `tab-channel-${channel['id']}`
+    navItem.setAttribute('data-bs-dismiss', 'offcanvas')
+    navItem.onclick = () => selectChannel(channel['id'])
+    categoryList.appendChild(navItem)
+
+    let channelButton = document.createElement('button')
+    channelButton.classList.add('nav-link')
+    channelButton.type = 'button'
+    channelButton.innerText = channel['name']
+    navItem.appendChild(channelButton)
+
+    let unreadBadge = document.createElement('span')
+    unreadBadge.classList.add('badge', 'rounded-pill', 'text-bg-light', 'ms-2')
+    unreadBadge.id = `unread-messages-${channel['id']}`
+    unreadBadge.innerText = channel.unread_messages || 0
+    if (!channel.unread_messages)
+        unreadBadge.classList.add('d-none')
+    channelButton.appendChild(unreadBadge)
+
+    if (document.getElementById('sort-by-unread-switch').checked)
+        navItem.style.order = `${-channel.unread_messages}`
+
+    fetchMessages(channel['id'])
+}
+
+function receiveMessage(message) {
+    let scrollableContent = document.getElementById('chat-messages')
+    let isScrolledToBottom = scrollableContent.scrollHeight - scrollableContent.clientHeight <= scrollableContent.scrollTop + 1
+
+    messages[message['channel_id']].set(message['id'], message)
+    redrawMessages()
+
+    // Scroll to bottom if the user was already at the bottom
+    if (isScrolledToBottom)
+        scrollableContent.scrollTop = scrollableContent.scrollHeight - scrollableContent.clientHeight
+
+    if (message['content'].includes("@everyone"))
+        showNotification(channels[message['channel_id']]['name'], `${message['author']} : ${message['content']}`)
+}
+
+function editMessage(data) {
+    messages[data['channel_id']].get(data['id'])['content'] = data['content']
+    redrawMessages()
+}
+
+function deleteMessage(data) {
+    messages[data['channel_id']].delete(data['id'])
+    redrawMessages()
+}
+
+function fetchMessages(channel_id, offset = 0, limit = MAX_MESSAGES) {
+    socket.send(JSON.stringify({
+        'type': 'fetch_messages',
+        'channel_id': channel_id,
+        'offset': offset,
+        'limit': limit,
+    }))
+}
+
+function fetchPreviousMessages() {
+    let channel_id = selected_channel_id
+    let offset = messages[channel_id].size
+    fetchMessages(channel_id, offset, MAX_MESSAGES)
+}
+
+function receiveFetchedMessages(data) {
+    console.log(data)
+    let channel_id = data['channel_id']
+    let new_messages = data['messages']
+
+    if (!messages[channel_id])
+        messages[channel_id] = new Map()
+
+    for (let message of new_messages)
+        messages[channel_id].set(message['id'], message)
+
+    // Sort messages by timestamp
+    messages[channel_id] = new Map([...messages[channel_id].values()]
+      .sort((a, b) => new Date(a['timestamp']) - new Date(b['timestamp']))
+      .map(message => [message['id'], message]))
+
+    redrawMessages()
+}
+
+function markMessageAsRead(data) {
+    for (let message of data['messages']) {
+        let stored_message = messages[message['channel_id']].get(message['id'])
+        if (stored_message)
+            stored_message['read'] = true
+    }
+    redrawMessages()
+    updateUnreadBadges(data['unread_messages'])
+}
+
+function updateUnreadBadges(unreadMessages) {
+    const sortByUnread = document.getElementById('sort-by-unread-switch').checked
+
+    for (let channel of Object.values(channels)) {
+        let unreadMessagesChannel = unreadMessages[channel['id']] || 0
+        channel.unread_messages = unreadMessagesChannel
+
+        let unreadBadge = document.getElementById(`unread-messages-${channel['id']}`)
+        unreadBadge.innerText = unreadMessagesChannel
+        if (unreadMessagesChannel)
+            unreadBadge.classList.remove('d-none')
+        else
+            unreadBadge.classList.add('d-none')
+
+        if (sortByUnread)
+            document.getElementById(`tab-channel-${channel['id']}`).style.order = `${-unreadMessagesChannel}`
+    }
+}
+
+function startPrivateChat(data) {
+    let channel = data['channel']
+    if (!channel) {
+        console.error('Private chat not found:', data)
+        return
+    }
+
+    if (!channels[channel['id']]) {
+        channels[channel['id']] = channel
+        messages[channel['id']] = new Map()
+        setChannels(Object.values(channels))
+    }
+
+    selectChannel(channel['id'])
+}
+
+function redrawMessages() {
+    let messageList = document.getElementById('message-list')
+    messageList.innerHTML = ''
+
+    let lastMessage = null
+    let lastContentDiv = null
+
+    for (let message of messages[selected_channel_id].values()) {
+        if (lastMessage && lastMessage['author'] === message['author']) {
+            let lastTimestamp = new Date(lastMessage['timestamp'])
+            let newTimestamp = new Date(message['timestamp'])
+            if ((newTimestamp - lastTimestamp) / 1000 < 60 * 10) {
+                let messageContentDiv = document.createElement('div')
+                messageContentDiv.classList.add('message')
+                messageContentDiv.setAttribute('data-message-id', message['id'])
+                lastContentDiv.appendChild(messageContentDiv)
+                let messageContentSpan = document.createElement('span')
+                messageContentSpan.innerText = message['content']
+                messageContentDiv.appendChild(messageContentSpan)
+
+                registerMessageContextMenu(message, messageContentDiv, messageContentSpan)
+                continue
+            }
+        }
+
+        let messageElement = document.createElement('li')
+        messageElement.classList.add('list-group-item')
+        messageList.appendChild(messageElement)
+
+        let authorDiv = document.createElement('div')
+        messageElement.appendChild(authorDiv)
+
+        let authorSpan = document.createElement('span')
+        authorSpan.classList.add('text-muted', 'fw-bold')
+        authorSpan.innerText = message['author']
+        authorDiv.appendChild(authorSpan)
+
+        registerSendPrivateMessageContextMenu(message, authorDiv, authorSpan)
+
+        let dateSpan = document.createElement('span')
+        dateSpan.classList.add('text-muted', 'float-end')
+        dateSpan.innerText = new Date(message['timestamp']).toLocaleString()
+        authorDiv.appendChild(dateSpan)
+
+        let contentDiv = document.createElement('div')
+        messageElement.appendChild(contentDiv)
+
+        let messageContentDiv = document.createElement('div')
+        messageContentDiv.classList.add('message')
+        messageContentDiv.setAttribute('data-message-id', message['id'])
+        contentDiv.appendChild(messageContentDiv)
+        let messageContentSpan = document.createElement('span')
+        messageContentSpan.innerText = message['content']
+        messageContentDiv.appendChild(messageContentSpan)
+
+        registerMessageContextMenu(message, messageContentDiv, messageContentSpan)
+
+        lastMessage = message
+        lastContentDiv = contentDiv
+    }
+
+    let fetchMoreButton = document.getElementById('fetch-previous-messages')
+    if (!messages[selected_channel_id].size || messages[selected_channel_id].size % MAX_MESSAGES !== 0)
+        fetchMoreButton.classList.add('d-none')
+    else
+        fetchMoreButton.classList.remove('d-none')
+
+    messageList.dispatchEvent(new CustomEvent('updatemessages'))
+}
+
+function removeAllPopovers() {
+    for (let popover of document.querySelectorAll('*[aria-describedby*="popover"]')) {
+        let instance = bootstrap.Popover.getInstance(popover)
+        if (instance)
+            instance.dispose()
+    }
+}
+
+function registerSendPrivateMessageContextMenu(message, div, span) {
+    div.addEventListener('contextmenu', (menu_event) => {
+        menu_event.preventDefault()
+        removeAllPopovers()
+        const popover = bootstrap.Popover.getOrCreateInstance(span, {
+            'title': message['author'],
+            'content': `<a id="send-private-message-link-${message['id']}" class="nav-link" href="#" tabindex="0">Envoyer un message privé</a>`,
+            'html': true,
+        })
+        popover.show()
+
+        document.getElementById('send-private-message-link-' + message['id']).addEventListener('click', event => {
+            event.preventDefault()
+            popover.dispose()
+            socket.send(JSON.stringify({
+                'type': 'start_private_chat',
+                'user_id': message['author_id'],
+            }))
+        })
+    })
+}
+
+function registerMessageContextMenu(message, div, span) {
+    div.addEventListener('contextmenu', (menu_event) => {
+        menu_event.preventDefault()
+        removeAllPopovers()
+        let content = `<a id="send-private-message-link-msg-${message['id']}" class="nav-link" href="#" tabindex="0">Envoyer un message privé</a>`
+
+        let has_right_to_edit = message['author_id'] === USER_ID || IS_ADMIN
+        if (has_right_to_edit) {
+            content += `<hr class="my-1">`
+            content += `<a id="edit-message-${message['id']}" class="nav-link" href="#" tabindex="0">Modifier</a>`
+            content += `<a id="delete-message-${message['id']}" class="nav-link" href="#" tabindex="0">Supprimer</a>`
+        }
+
+        const popover = bootstrap.Popover.getOrCreateInstance(span, {
+            'content': content,
+            'html': true,
+            'placement': 'bottom',
+        })
+        popover.show()
+
+        document.getElementById('send-private-message-link-msg-' + message['id']).addEventListener('click', event => {
+            event.preventDefault()
+            popover.dispose()
+            socket.send(JSON.stringify({
+                'type': 'start_private_chat',
+                'user_id': message['author_id'],
+            }))
+        })
+
+        if (has_right_to_edit) {
+            document.getElementById('edit-message-' + message['id']).addEventListener('click', event => {
+                event.preventDefault()
+                popover.dispose()
+                let new_message = prompt("Modifier le message", message['content'])
+                if (new_message) {
+                    socket.send(JSON.stringify({
+                        'type': 'edit_message',
+                        'message_id': message['id'],
+                        'content': new_message,
+                    }))
+                }
+            })
+
+            document.getElementById('delete-message-' + message['id']).addEventListener('click', event => {
+                event.preventDefault()
+                popover.dispose()
+                if (confirm(`Supprimer le message ?\n${message['content']}`)) {
+                    socket.send(JSON.stringify({
+                        'type': 'delete_message',
+                        'message_id': message['id'],
+                    }))
+                }
+            })
+        }
+    })
+}
+
+function toggleFullscreen() {
+    let chatContainer = document.getElementById('chat-container')
+    if (!chatContainer.getAttribute('data-fullscreen')) {
+        chatContainer.setAttribute('data-fullscreen', 'true')
+        chatContainer.classList.add('position-absolute', 'top-0', 'start-0', 'vh-100', 'z-3')
+        window.history.replaceState({}, null, `?fullscreen=1`)
+    }
+    else {
+        chatContainer.removeAttribute('data-fullscreen')
+        chatContainer.classList.remove('position-absolute', 'top-0', 'start-0', 'vh-100', 'z-3')
+        window.history.replaceState({}, null, `?fullscreen=0`)
+    }
+}
+
+document.addEventListener('DOMContentLoaded', () => {
+    document.addEventListener('click', removeAllPopovers)
+
+    document.getElementById('sort-by-unread-switch').addEventListener('change', event => {
+        const sortByUnread = event.target.checked
+        for (let channel of Object.values(channels)) {
+            let item = document.getElementById(`tab-channel-${channel['id']}`)
+            if (sortByUnread)
+                item.style.order = `${-channel.unread_messages}`
+            else
+                item.style.removeProperty('order')
+        }
+
+        localStorage.setItem('chat.sort-by-unread', sortByUnread)
+    })
+
+    if (localStorage.getItem('chat.sort-by-unread') === 'true') {
+        document.getElementById('sort-by-unread-switch').checked = true
+        document.getElementById('sort-by-unread-switch').dispatchEvent(new Event('change'))
+    }
+
+    /**
+     * Process the received data from the server.
+     * @param data The received message
+     */
+    function processMessage(data) {
+        switch (data['type']) {
+            case 'fetch_channels':
+                setChannels(data['channels'])
+                break
+            case 'send_message':
+                receiveMessage(data)
+                break
+            case 'edit_message':
+                editMessage(data)
+                break
+            case 'delete_message':
+                deleteMessage(data)
+                break
+            case 'fetch_messages':
+                receiveFetchedMessages(data)
+                break
+            case 'mark_read':
+                markMessageAsRead(data)
+                break
+            case 'start_private_chat':
+                startPrivateChat(data)
+                break
+            default:
+                console.log(data)
+                console.error('Unknown message type:', data['type'])
+                break
+        }
+    }
+
+    function setupSocket(nextDelay = 1000) {
+        // Open a global websocket
+        socket = new WebSocket(
+            (document.location.protocol === 'https:' ? 'wss' : 'ws') + '://' + window.location.host + '/ws/chat/'
+        )
+        let socketOpen = false
+
+        // Listen on websockets and process messages from the server
+        socket.addEventListener('message', e => {
+            // Parse received data as JSON
+            const data = JSON.parse(e.data)
+
+            processMessage(data)
+        })
+
+        // Manage errors
+        socket.addEventListener('close', e => {
+            console.error('Chat socket closed unexpectedly, restarting…')
+            setTimeout(() => setupSocket(socketOpen ? 1000 : 2 * nextDelay), nextDelay)
+        })
+
+        socket.addEventListener('open', e => {
+            socketOpen = true
+            socket.send(JSON.stringify({
+                'type': 'fetch_channels',
+            }))
+        })
+    }
+
+    function setupSwipeOffscreen() {
+        const offcanvas = new bootstrap.Offcanvas(document.getElementById('channelSelector'))
+
+        let lastX = null
+        document.addEventListener('touchstart', (event) => {
+            if (event.touches.length === 1)
+                lastX = event.touches[0].clientX
+        })
+        document.addEventListener('touchmove', (event) => {
+            if (event.touches.length === 1 && lastX !== null) {
+                const diff = event.touches[0].clientX - lastX
+                if (diff > window.innerWidth / 10 && lastX < window.innerWidth / 4) {
+                    offcanvas.show()
+                    lastX = null
+                }
+                else if (diff < -window.innerWidth / 10) {
+                    offcanvas.hide()
+                    lastX = null
+                }
+            }
+        })
+        document.addEventListener('touchend', () => {
+            lastX = null
+        })
+    }
+
+    function setupReadTracker() {
+        const scrollableContent = document.getElementById('chat-messages')
+        const messagesList = document.getElementById('message-list')
+        let markReadBuffer = []
+        let markReadTimeout = null
+
+        scrollableContent.addEventListener('scroll', () => {
+            if (scrollableContent.clientHeight - scrollableContent.scrollTop === scrollableContent.scrollHeight
+                && !document.getElementById('fetch-previous-messages').classList.contains('d-none')) {
+                // If the user is at the top of the chat, fetch previous messages
+                fetchPreviousMessages()}
+
+            markVisibleMessagesAsRead()
+        })
+
+        messagesList.addEventListener('updatemessages', () => markVisibleMessagesAsRead())
+
+        function markVisibleMessagesAsRead() {
+            let viewport = scrollableContent.getBoundingClientRect()
+
+            for (let item of messagesList.querySelectorAll('.message')) {
+                let message = messages[selected_channel_id].get(parseInt(item.getAttribute('data-message-id')))
+                if (!message.read) {
+                    let rect = item.getBoundingClientRect()
+                    if (rect.top >= viewport.top && rect.bottom <= viewport.bottom) {
+                        message.read = true
+                        markReadBuffer.push(message['id'])
+                        if (markReadTimeout)
+                            clearTimeout(markReadTimeout)
+                        markReadTimeout = setTimeout(() => {
+                            socket.send(JSON.stringify({
+                                'type': 'mark_read',
+                                'message_ids': markReadBuffer,
+                            }))
+                            markReadBuffer = []
+                            markReadTimeout = null
+                        }, 3000)
+                    }
+                }
+            }
+        }
+
+        markVisibleMessagesAsRead()
+    }
+
+    function setupPWAPrompt() {
+        let deferredPrompt = null
+
+        window.addEventListener("beforeinstallprompt", (e) => {
+            e.preventDefault()
+            deferredPrompt = e
+            let btn = document.getElementById('install-app-home-screen')
+            let alert = document.getElementById('alert-download-chat-app')
+            btn.classList.remove('d-none')
+            alert.classList.remove('d-none')
+            btn.onclick = function () {
+                deferredPrompt.prompt()
+                deferredPrompt.userChoice.then((choiceResult) => {
+                    if (choiceResult.outcome === 'accepted') {
+                        deferredPrompt = null
+                        btn.classList.add('d-none')
+                        alert.classList.add('d-none')
+                    }
+                })
+            }
+        })
+    }
+
+    setupSocket()
+    setupSwipeOffscreen()
+    setupReadTracker()
+    setupPWAPrompt()
+})
diff --git a/chat/static/chat.webmanifest b/chat/static/chat.webmanifest
new file mode 100644
index 0000000..156d0a1
--- /dev/null
+++ b/chat/static/chat.webmanifest
@@ -0,0 +1,29 @@
+{
+    "background_color": "white",
+    "description": "Chat pour le TFJM²",
+    "display": "standalone",
+    "icons": [
+        {
+            "src": "tfjm-square.svg",
+            "sizes": "any",
+            "type": "image/svg+xml",
+            "purpose": "maskable"
+        },
+        {
+            "src": "tfjm-512.png",
+            "sizes": "512x512",
+            "type": "image/png",
+            "purpose": "maskable"
+        },
+        {
+            "src": "tfjm-192.png",
+            "sizes": "192x192",
+            "type": "image/png",
+            "purpose": "maskable"
+        }
+    ],
+    "name": "Chat TFJM²",
+    "short_name": "Chat TFJM²",
+    "start_url": "/chat/fullscreen",
+    "theme_color": "black"
+}
diff --git a/chat/templates/chat/chat.html b/chat/templates/chat/chat.html
new file mode 100644
index 0000000..a7c5c45
--- /dev/null
+++ b/chat/templates/chat/chat.html
@@ -0,0 +1,19 @@
+{% extends "base.html" %}
+
+{% load static %}
+{% load i18n %}
+
+{% block extracss %}
+    <link rel="manifest" href="{% static "chat.webmanifest" %}">
+{% endblock %}
+
+{% block content-title %}{% endblock %}
+
+{% block content %}
+    {% include "chat/content.html" %}
+{% endblock %}
+
+{% block extrajavascript %}
+    {# This script contains all data for the chat management #}
+    <script src="{% static 'chat.js' %}"></script>
+{% endblock %}
diff --git a/chat/templates/chat/content.html b/chat/templates/chat/content.html
new file mode 100644
index 0000000..0bf517f
--- /dev/null
+++ b/chat/templates/chat/content.html
@@ -0,0 +1,99 @@
+{% load i18n %}
+
+<noscript>
+    {% trans "JavaScript must be enabled on your browser to access chat." %}
+</noscript>
+<div class="offcanvas offcanvas-start" tabindex="-1" id="channelSelector" aria-labelledby="offcanvasTitle">
+    <div class="offcanvas-header">
+        <h3 class="offcanvas-title" id="offcanvasTitle">{% trans "Chat channels" %}</h3>
+        <button type="button" class="btn-close" data-bs-dismiss="offcanvas" aria-label="Close"></button>
+    </div>
+    <div class="offcanvas-body">
+        <div class="form-switch form-switch">
+            <input class="form-check-input" type="checkbox" role="switch" id="sort-by-unread-switch">
+            <label class="form-check-label" for="sort-by-unread-switch">{% trans "Sort by unread messages" %}</label>
+        </div>
+        <ul class="list-group list-group-flush" id="nav-channels-tab">
+            <li class="list-group-item d-none">
+                <h4>{% trans "General channels" %}</h4>
+                <ul class="list-group list-group-flush" id="nav-general-channels-tab"></ul>
+            </li>
+            <li class="list-group-item d-none">
+                <h4>{% trans "Tournament channels" %}</h4>
+                <ul class="list-group list-group-flush" id="nav-tournament-channels-tab"></ul>
+            </li>
+            <li class="list-group-item d-none">
+                <h4>{% trans "Team channels" %}</h4>
+                <ul class="list-group list-group-flush" id="nav-team-channels-tab"></ul>
+            </li>
+            <li class="list-group-item d-none">
+                <h4>{% trans "Private channels" %}</h4>
+                <ul class="list-group list-group-flush" id="nav-private-channels-tab"></ul>
+            </li>
+        </ul>
+    </div>
+</div>
+
+<div class="alert alert-info d-none" id="alert-download-chat-app">
+    {% trans "You can install a shortcut to the chat on your home screen using the download button on the header." %}
+</div>
+
+<div class="card tab-content w-100 mh-100{% if request.GET.fullscreen == '1' or fullscreen %} position-absolute top-0 start-0 vh-100 z-3{% endif %}"
+     style="height: 95vh" id="chat-container">
+    <div class="card-header">
+        <h3>
+        {% if fullscreen %}
+            {# Logout button must be present in a form. The form must includes the whole line. #}
+            <form action="{% url 'chat:logout' %}" method="post">
+                {% csrf_token %}
+        {% endif %}
+            <button class="navbar-toggler" type="button" data-bs-toggle="offcanvas" data-bs-target="#channelSelector"
+                    aria-controls="channelSelector" aria-expanded="false" aria-label="Toggle channel selector">
+                <span class="navbar-toggler-icon"></span>
+            </button>
+            <span id="channel-title"></span>
+            {% if not fullscreen %}
+                <button class="btn float-end" type="button" onclick="toggleFullscreen()" title="{% trans "Toggle fullscreen mode" %}">
+                    <i class="fas fa-expand"></i>
+                </button>
+            {% else %}
+                <button class="btn float-end" title="{% trans "Log out" %}">
+                    <i class="fas fa-sign-out-alt"></i>
+                </button>
+            {% endif %}
+            <button class="btn float-end d-none" type="button" id="install-app-home-screen" title="{% trans "Install app on home screen" %}">
+                <i class="fas fa-download"></i>
+            </button>
+            {% if fullscreen %}
+                </form>
+            {% endif %}
+        </h3>
+    </div>
+    <div class="card-body d-flex flex-column-reverse flex-grow-0 overflow-y-scroll" id="chat-messages">
+        <ul class="list-group list-group-flush" id="message-list"></ul>
+        <div class="text-center d-none" id="fetch-previous-messages">
+            <a href="#" class="nav-link" onclick="event.preventDefault(); fetchPreviousMessages()">
+                {% trans "Fetch previous messages…" %}
+            </a>
+            <hr>
+        </div>
+    </div>
+    <div class="card-footer mt-auto">
+        <form onsubmit="event.preventDefault(); sendMessage()">
+            <div class="input-group">
+                <label for="input-message" class="input-group-text">
+                    <i class="fas fa-comment"></i>
+                </label>
+                <input type="text" class="form-control" id="input-message" placeholder="{% trans "Send message…" %}" autofocus autocomplete="off">
+                <button class="input-group-text btn btn-success" type="submit">
+                    <i class="fas fa-paper-plane"></i>
+                </button>
+            </div>
+        </form>
+    </div>
+</div>
+
+<script>
+    const USER_ID = {{ request.user.id }}
+    const IS_ADMIN = {{ request.user.registration.is_admin|yesno:"true,false" }}
+</script>
\ No newline at end of file
diff --git a/chat/templates/chat/fullscreen.html b/chat/templates/chat/fullscreen.html
new file mode 100644
index 0000000..8d5053a
--- /dev/null
+++ b/chat/templates/chat/fullscreen.html
@@ -0,0 +1,34 @@
+{% load i18n static %}
+
+<!DOCTYPE html>
+{% get_current_language as LANGUAGE_CODE %}{% get_current_language_bidi as LANGUAGE_BIDI %}
+<html lang="{{ LANGUAGE_CODE|default:"fr" }}" {% if LANGUAGE_BIDI %}dir="rtl"{% endif %}>
+<head>
+    <meta charset="utf-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
+    <title>
+        Chat du TFJM²
+    </title>
+    <meta name="description" content="Chat du TFJM²">
+
+    {# Favicon #}
+    <link rel="shortcut icon" href="{% static "favicon.ico" %}">
+    <meta name="theme-color" content="#ffffff">
+
+    {# Bootstrap CSS #}
+    <link rel="stylesheet" href="{% static 'bootstrap/css/bootstrap.min.css' %}">
+    <link rel="stylesheet" href="{% static 'fontawesome/css/all.css' %}">
+    <link rel="stylesheet" href="{% static 'fontawesome/css/v4-shims.css' %}">
+
+    {# Bootstrap JavaScript #}
+    <script src="{% static 'bootstrap/js/bootstrap.bundle.min.js' %}"></script>
+
+    <link rel="manifest" href="{% static "chat.webmanifest" %}">
+</head>
+<body class="d-flex w-100 h-100 flex-column">
+{% include "chat/content.html" with fullscreen=True %}
+
+<script src="{% static 'theme.js' %}"></script>
+<script src="{% static 'chat.js' %}"></script>
+</body>
+</html>
diff --git a/chat/templates/chat/login.html b/chat/templates/chat/login.html
new file mode 100644
index 0000000..ee3e45e
--- /dev/null
+++ b/chat/templates/chat/login.html
@@ -0,0 +1,36 @@
+{% load i18n static %}
+
+<!DOCTYPE html>
+{% get_current_language as LANGUAGE_CODE %}{% get_current_language_bidi as LANGUAGE_BIDI %}
+<html lang="{{ LANGUAGE_CODE|default:"fr" }}" {% if LANGUAGE_BIDI %}dir="rtl"{% endif %}>
+<head>
+    <meta charset="utf-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
+    <title>
+        Chat du TFJM² - {% trans "Log in" %}
+    </title>
+    <meta name="description" content="Chat du TFJM²">
+
+    {# Favicon #}
+    <link rel="shortcut icon" href="{% static "favicon.ico" %}">
+    <meta name="theme-color" content="#ffffff">
+
+    {# Bootstrap CSS #}
+    <link rel="stylesheet" href="{% static 'bootstrap/css/bootstrap.min.css' %}">
+    <link rel="stylesheet" href="{% static 'fontawesome/css/all.css' %}">
+    <link rel="stylesheet" href="{% static 'fontawesome/css/v4-shims.css' %}">
+
+    {# Bootstrap JavaScript #}
+    <script src="{% static 'bootstrap/js/bootstrap.bundle.min.js' %}"></script>
+
+    <link rel="manifest" href="{% static "chat.webmanifest" %}">
+</head>
+<body class="d-flex w-100 h-100 flex-column">
+    <div class="container">
+        <h1>{% trans "Log in" %}</h1>
+        {% include "registration/includes/login.html" %}
+    </div>
+
+<script src="{% static 'theme.js' %}"></script>
+</body>
+</html>
diff --git a/chat/tests.py b/chat/tests.py
new file mode 100644
index 0000000..80ea069
--- /dev/null
+++ b/chat/tests.py
@@ -0,0 +1,2 @@
+# Copyright (C) 2024 by Animath
+# SPDX-License-Identifier: GPL-3.0-or-later
diff --git a/chat/urls.py b/chat/urls.py
new file mode 100644
index 0000000..9adf06e
--- /dev/null
+++ b/chat/urls.py
@@ -0,0 +1,18 @@
+# Copyright (C) 2024 by Animath
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+from django.contrib.auth.views import LoginView, LogoutView
+from django.urls import path
+from django.utils.translation import gettext_lazy as _
+from tfjm.views import LoginRequiredTemplateView
+
+app_name = 'chat'
+
+urlpatterns = [
+    path('', LoginRequiredTemplateView.as_view(template_name="chat/chat.html",
+                                               extra_context={'title': _("Chat")}), name='chat'),
+    path('fullscreen/', LoginRequiredTemplateView.as_view(template_name="chat/fullscreen.html", login_url='chat:login'),
+         name='fullscreen'),
+    path('login/', LoginView.as_view(template_name="chat/login.html"), name='login'),
+    path('logout/', LogoutView.as_view(next_page='chat:fullscreen'), name='logout'),
+]
diff --git a/draw/consumers.py b/draw/consumers.py
index d64c888..7719b8d 100644
--- a/draw/consumers.py
+++ b/draw/consumers.py
@@ -9,6 +9,7 @@ from random import randint, shuffle
 from asgiref.sync import sync_to_async
 from channels.generic.websocket import AsyncJsonWebsocketConsumer
 from django.conf import settings
+from django.contrib.auth.models import User
 from django.contrib.contenttypes.models import ContentType
 from django.utils import translation
 from django.utils.translation import gettext_lazy as _
@@ -44,6 +45,8 @@ class DrawConsumer(AsyncJsonWebsocketConsumer):
         We accept only if this is a user of a team of the associated tournament, or a volunteer
         of the tournament.
         """
+        if '_fake_user_id' in self.scope['session']:
+            self.scope['user'] = await User.objects.aget(pk=self.scope['session']['_fake_user_id'])
 
         # Fetch the registration of the current user
         user = self.scope['user']
diff --git a/draw/migrations/0003_alter_teamdraw_options.py b/draw/migrations/0003_alter_teamdraw_options.py
new file mode 100644
index 0000000..8725ba9
--- /dev/null
+++ b/draw/migrations/0003_alter_teamdraw_options.py
@@ -0,0 +1,28 @@
+# Generated by Django 5.0.3 on 2024-04-22 22:11
+
+from django.db import migrations
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("draw", "0002_alter_teamdraw_purposed"),
+    ]
+
+    operations = [
+        migrations.AlterModelOptions(
+            name="teamdraw",
+            options={
+                "ordering": (
+                    "round__draw__tournament__name",
+                    "round__number",
+                    "pool__letter",
+                    "passage_index",
+                    "choice_dice",
+                    "passage_dice",
+                ),
+                "verbose_name": "team draw",
+                "verbose_name_plural": "team draws",
+            },
+        ),
+    ]
diff --git a/draw/routing.py b/draw/routing.py
deleted file mode 100644
index 8ce6085..0000000
--- a/draw/routing.py
+++ /dev/null
@@ -1,10 +0,0 @@
-# Copyright (C) 2023 by Animath
-# SPDX-License-Identifier: GPL-3.0-or-later
-
-from django.urls import path
-
-from . import consumers
-
-websocket_urlpatterns = [
-    path("ws/draw/", consumers.DrawConsumer.as_asgi()),
-]
diff --git a/draw/tests.py b/draw/tests.py
index 9f3ec6a..bbb209a 100644
--- a/draw/tests.py
+++ b/draw/tests.py
@@ -14,8 +14,8 @@ from django.contrib.sites.models import Site
 from django.test import TestCase
 from django.urls import reverse
 from participation.models import Team, Tournament
+from tfjm import routing as websocket_routing
 
-from . import routing
 from .models import Draw, Pool, Round, TeamDraw
 
 
@@ -55,7 +55,7 @@ class TestDraw(TestCase):
 
         # Connect to Websocket
         headers = [(b'cookie', self.async_client.cookies.output(header='', sep='; ').encode())]
-        communicator = WebsocketCommunicator(AuthMiddlewareStack(URLRouter(routing.websocket_urlpatterns)),
+        communicator = WebsocketCommunicator(AuthMiddlewareStack(URLRouter(websocket_routing.websocket_urlpatterns)),
                                              "/ws/draw/", headers)
         connected, subprotocol = await communicator.connect()
         self.assertTrue(connected)
diff --git a/locale/fr/LC_MESSAGES/django.po b/locale/fr/LC_MESSAGES/django.po
index 5043b78..831fcea 100644
--- a/locale/fr/LC_MESSAGES/django.po
+++ b/locale/fr/LC_MESSAGES/django.po
@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: TFJM\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2024-04-22 23:36+0200\n"
+"POT-Creation-Date: 2024-04-28 23:37+0200\n"
 "PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
 "Last-Translator: Emmy D'Anello <emmy.danello@animath.fr>\n"
 "Language-Team: LANGUAGE <LL@li.org>\n"
@@ -21,14 +21,41 @@ msgstr ""
 msgid "API"
 msgstr "API"
 
-#: draw/admin.py:39 draw/admin.py:57 draw/admin.py:75
-#: participation/admin.py:109 participation/models.py:253
-#: participation/tables.py:88
-msgid "teams"
-msgstr "équipes"
+#: chat/models.py:17 chat/templates/chat/content.html:18
+msgid "General channels"
+msgstr "Canaux généraux"
 
-#: draw/admin.py:53 draw/admin.py:71 draw/admin.py:88 draw/models.py:26
-#: participation/admin.py:79 participation/admin.py:140
+#: chat/models.py:18 chat/templates/chat/content.html:22
+msgid "Tournament channels"
+msgstr "Canaux de tournois"
+
+#: chat/models.py:19 chat/templates/chat/content.html:26
+msgid "Team channels"
+msgstr "Canaux d'équipes"
+
+#: chat/models.py:20 chat/templates/chat/content.html:30
+msgid "Private channels"
+msgstr "Messages privés"
+
+#: chat/models.py:24 participation/models.py:35 participation/models.py:263
+#: participation/tables.py:18 participation/tables.py:34
+msgid "name"
+msgstr "nom"
+
+#: chat/models.py:29
+msgid "category"
+msgstr "catégorie"
+
+#: chat/models.py:36
+msgid "read permission"
+msgstr "permission de lecture"
+
+#: chat/models.py:42
+msgid "write permission"
+msgstr "permission d'écriture"
+
+#: chat/models.py:52 draw/admin.py:53 draw/admin.py:71 draw/admin.py:88
+#: draw/models.py:26 participation/admin.py:79 participation/admin.py:140
 #: participation/admin.py:171 participation/models.py:693
 #: participation/models.py:717 participation/models.py:935
 #: registration/models.py:756
@@ -36,6 +63,174 @@ msgstr "équipes"
 msgid "tournament"
 msgstr "tournoi"
 
+#: chat/models.py:54
+msgid ""
+"For a permission that concerns a tournament, indicates what is the concerned "
+"tournament."
+msgstr ""
+"Pour une permission qui concerne un tournoi, indique quel est le tournoi "
+"concerné."
+
+#: chat/models.py:63 draw/models.py:429 draw/models.py:456
+#: participation/admin.py:136 participation/admin.py:155
+#: participation/models.py:1434 participation/models.py:1443
+#: participation/tables.py:84
+msgid "pool"
+msgstr "poule"
+
+#: chat/models.py:65
+msgid ""
+"For a permission that concerns a pool, indicates what is the concerned pool."
+msgstr ""
+"Pour une permission qui concerne une poule, indique quelle est la poule "
+"concernée."
+
+#: chat/models.py:74 draw/templates/draw/tournament_content.html:277
+#: participation/admin.py:167 participation/models.py:252
+#: participation/models.py:708
+#: participation/templates/participation/tournament_harmonize.html:15
+#: registration/models.py:157 registration/models.py:747
+#: registration/tables.py:39
+#: registration/templates/registration/payment_form.html:52
+msgid "team"
+msgstr "équipe"
+
+#: chat/models.py:76
+msgid ""
+"For a permission that concerns a team, indicates what is the concerned team."
+msgstr ""
+"Pour une permission qui concerne une équipe, indique quelle est l'équipe "
+"concernée."
+
+#: chat/models.py:80
+msgid "private"
+msgstr "privé"
+
+#: chat/models.py:82
+msgid ""
+"If checked, only users who have been explicitly added to the channel will be "
+"able to access it."
+msgstr ""
+"Si sélectionné, seul⋅es les utilisateur⋅rices qui ont été explicitement "
+"ajouté⋅es au canal pourront y accéder."
+
+#: chat/models.py:87
+msgid "invited users"
+msgstr "Utilisateur⋅rices invité"
+
+#: chat/models.py:90
+msgid ""
+"Extra users who have been invited to the channel, in addition to the "
+"permitted group of the channel."
+msgstr ""
+"Utilisateur⋅rices supplémentaires qui ont été invité⋅es au canal, en plus du "
+"groupe autorisé du canal."
+
+#: chat/models.py:102
+#, python-brace-format
+msgid "Channel {name}"
+msgstr "Canal {name}"
+
+#: chat/models.py:168 chat/models.py:177
+msgid "channel"
+msgstr "canal"
+
+#: chat/models.py:169
+msgid "channels"
+msgstr "canaux"
+
+#: chat/models.py:183
+msgid "author"
+msgstr "auteur⋅rice"
+
+#: chat/models.py:190
+msgid "created at"
+msgstr "créé le"
+
+#: chat/models.py:195
+msgid "updated at"
+msgstr "modifié le"
+
+#: chat/models.py:200
+msgid "content"
+msgstr "contenu"
+
+#: chat/models.py:205
+msgid "users read"
+msgstr "utilisateur⋅rices ayant lu"
+
+#: chat/models.py:208
+msgid "Users who have read the message."
+msgstr "Utilisateur⋅rices qui ont lu le message."
+
+#: chat/models.py:271
+msgid "message"
+msgstr "message"
+
+#: chat/models.py:272
+msgid "messages"
+msgstr "messages"
+
+#: chat/templates/chat/content.html:4
+msgid "JavaScript must be enabled on your browser to access chat."
+msgstr "JavaScript doit être activé sur votre navigateur pour accéder au chat."
+
+#: chat/templates/chat/content.html:8
+msgid "Chat channels"
+msgstr "Canaux de chat"
+
+#: chat/templates/chat/content.html:14
+msgid "Sort by unread messages"
+msgstr "Trier par messages non lus"
+
+#: chat/templates/chat/content.html:38
+msgid ""
+"You can install a shortcut to the chat on your home screen using the "
+"download button on the header."
+msgstr ""
+"Vous pouvez installer un raccourci vers le chat sur votre écran d'accueil en "
+"utilisant le bouton de téléchargement dans l'en-tête."
+
+#: chat/templates/chat/content.html:56
+msgid "Toggle fullscreen mode"
+msgstr "Inverse le mode plein écran"
+
+#: chat/templates/chat/content.html:60 tfjm/templates/navbar.html:117
+msgid "Log out"
+msgstr "Déconnexion"
+
+#: chat/templates/chat/content.html:64
+msgid "Install app on home screen"
+msgstr "Installer l'application sur l'écran d'accueil"
+
+#: chat/templates/chat/content.html:76
+msgid "Fetch previous messages…"
+msgstr "Récupérer les messages précédents…"
+
+#: chat/templates/chat/content.html:87
+msgid "Send message…"
+msgstr "Envoyer un message…"
+
+#: chat/templates/chat/login.html:10 chat/templates/chat/login.html:30
+#: registration/templates/registration/password_reset_complete.html:10
+#: tfjm/templates/base.html:84 tfjm/templates/base.html:85
+#: tfjm/templates/navbar.html:98
+#: tfjm/templates/registration/includes/login.html:22
+#: tfjm/templates/registration/login.html:7
+#: tfjm/templates/registration/login.html:8
+msgid "Log in"
+msgstr "Connexion"
+
+#: chat/urls.py:13 tfjm/templates/navbar.html:66
+msgid "Chat"
+msgstr "Chat"
+
+#: draw/admin.py:39 draw/admin.py:57 draw/admin.py:75
+#: participation/admin.py:109 participation/models.py:253
+#: participation/tables.py:88
+msgid "teams"
+msgstr "équipes"
+
 #: draw/admin.py:92 draw/models.py:234 draw/models.py:448
 #: participation/models.py:939
 msgid "round"
@@ -45,68 +240,68 @@ msgstr "tour"
 msgid "Draw"
 msgstr "Tirage au sort"
 
-#: draw/consumers.py:30
+#: draw/consumers.py:31
 msgid "You are not an organizer."
 msgstr "Vous n'êtes pas un⋅e organisateur⋅rice."
 
-#: draw/consumers.py:162
+#: draw/consumers.py:165
 msgid "The draw is already started."
 msgstr "Le tirage a déjà commencé."
 
-#: draw/consumers.py:168
+#: draw/consumers.py:171
 msgid "Invalid format"
 msgstr "Format invalide"
 
-#: draw/consumers.py:173
+#: draw/consumers.py:176
 #, python-brace-format
 msgid "The sum must be equal to the number of teams: expected {len}, got {sum}"
 msgstr ""
 "La somme doit être égale au nombre d'équipes : attendu {len}, obtenu {sum}"
 
-#: draw/consumers.py:178
+#: draw/consumers.py:181
 msgid "There can be at most one pool with 5 teams."
 msgstr "Il ne peut y avoir au plus qu'une seule poule de 5 équipes."
 
-#: draw/consumers.py:218
+#: draw/consumers.py:221
 msgid "Draw started!"
 msgstr "Le tirage a commencé !"
 
-#: draw/consumers.py:240
+#: draw/consumers.py:243
 #, python-brace-format
 msgid "The draw for the tournament {tournament} will start."
 msgstr "Le tirage au sort du tournoi {tournament} va commencer."
 
-#: draw/consumers.py:251 draw/consumers.py:277 draw/consumers.py:687
-#: draw/consumers.py:904 draw/consumers.py:993 draw/consumers.py:1015
-#: draw/consumers.py:1106 draw/templates/draw/tournament_content.html:5
+#: draw/consumers.py:254 draw/consumers.py:280 draw/consumers.py:690
+#: draw/consumers.py:907 draw/consumers.py:996 draw/consumers.py:1018
+#: draw/consumers.py:1109 draw/templates/draw/tournament_content.html:5
 msgid "The draw has not started yet."
 msgstr "Le tirage au sort n'a pas encore commencé."
 
-#: draw/consumers.py:264
+#: draw/consumers.py:267
 #, python-brace-format
 msgid "The draw for the tournament {tournament} is aborted."
 msgstr "Le tirage au sort du tournoi {tournament} est annulé."
 
-#: draw/consumers.py:304 draw/consumers.py:325 draw/consumers.py:621
-#: draw/consumers.py:692 draw/consumers.py:909
+#: draw/consumers.py:307 draw/consumers.py:328 draw/consumers.py:624
+#: draw/consumers.py:695 draw/consumers.py:912
 msgid "This is not the time for this."
 msgstr "Ce n'est pas le moment pour cela."
 
-#: draw/consumers.py:317 draw/consumers.py:320
+#: draw/consumers.py:320 draw/consumers.py:323
 msgid "You've already launched the dice."
 msgstr "Vous avez déjà lancé le dé."
 
-#: draw/consumers.py:323
+#: draw/consumers.py:326
 msgid "It is not your turn."
 msgstr "Ce n'est pas votre tour."
 
-#: draw/consumers.py:410
+#: draw/consumers.py:413
 #, python-brace-format
 msgid "Dices from teams {teams} are identical. Please relaunch your dices."
 msgstr ""
 "Les dés des équipes {teams} sont identiques. Merci de relancer vos dés."
 
-#: draw/consumers.py:1018
+#: draw/consumers.py:1021
 msgid "This is only available for the final tournament."
 msgstr "Cela n'est possible que pour la finale."
 
@@ -213,12 +408,6 @@ msgstr "L'instance complète de la poule."
 msgid "Pool {letter}{number}"
 msgstr "Poule {letter}{number}"
 
-#: draw/models.py:429 draw/models.py:456 participation/admin.py:136
-#: participation/admin.py:155 participation/models.py:1434
-#: participation/models.py:1443 participation/tables.py:84
-msgid "pool"
-msgstr "poule"
-
 #: draw/models.py:430 participation/models.py:1435
 msgid "pools"
 msgstr "poules"
@@ -352,15 +541,6 @@ msgstr "Tirer un problème pour"
 msgid "Pb."
 msgstr "Pb."
 
-#: draw/templates/draw/tournament_content.html:277 participation/admin.py:167
-#: participation/models.py:252 participation/models.py:708
-#: participation/templates/participation/tournament_harmonize.html:15
-#: registration/models.py:157 registration/models.py:747
-#: registration/tables.py:39
-#: registration/templates/registration/payment_form.html:52
-msgid "team"
-msgstr "équipe"
-
 #: draw/templates/draw/tournament_content.html:287
 #: draw/templates/draw/tournament_content.html:288
 #: draw/templates/draw/tournament_content.html:289
@@ -589,11 +769,6 @@ msgstr "Ce⋅tte défenseur⋅se ne travaille pas sur ce problème."
 msgid "The PDF file must not have more than 2 pages."
 msgstr "Le fichier PDF ne doit pas avoir plus de 2 pages."
 
-#: participation/models.py:35 participation/models.py:263
-#: participation/tables.py:18 participation/tables.py:34
-msgid "name"
-msgstr "nom"
-
 #: participation/models.py:41 participation/tables.py:39
 msgid "trigram"
 msgstr "trigramme"
@@ -1219,16 +1394,6 @@ msgstr "Pas d'équipe définie"
 msgid "Update"
 msgstr "Modifier"
 
-#: participation/templates/participation/chat.html:7
-msgid ""
-"The chat feature is now out of usage. If you feel that having a chat feature "
-"between participants is important, for example to build a team, please "
-"contact us."
-msgstr ""
-"La fonctionnalité de chat est désormais hors-service. Si vous pensez "
-"qu'avoir un chat entre les participant⋅es est important, par exemple pour "
-"former une équipe, merci de nous contacter."
-
 #: participation/templates/participation/create_team.html:11
 #: participation/templates/participation/tournament_form.html:14
 #: tfjm/templates/base.html:80
@@ -2899,14 +3064,6 @@ msgstr "Changer mon mot de passe"
 msgid "Your password has been set. You may go ahead and log in now."
 msgstr "Votre mot de passe a été changé. Vous pouvez désormais vous connecter."
 
-#: registration/templates/registration/password_reset_complete.html:10
-#: tfjm/templates/base.html:84 tfjm/templates/base.html:85
-#: tfjm/templates/navbar.html:98 tfjm/templates/registration/login.html:7
-#: tfjm/templates/registration/login.html:8
-#: tfjm/templates/registration/login.html:30
-msgid "Log in"
-msgstr "Connexion"
-
 #: registration/templates/registration/password_reset_confirm.html:9
 msgid ""
 "Please enter your new password twice so we can verify you typed it in "
@@ -3484,11 +3641,55 @@ msgstr "Autorisation parentale de {student}.{ext}"
 msgid "Payment receipt of {registrations}.{ext}"
 msgstr "Justificatif de paiement de {registrations}.{ext}"
 
-#: tfjm/settings.py:167
+#: tfjm/permissions.py:9
+msgid "Everyone, including anonymous users"
+msgstr "Tout le monde, incluant les utilisateur⋅rices anonymes"
+
+#: tfjm/permissions.py:10
+msgid "Authenticated users"
+msgstr "Utilisateur⋅rices connecté⋅es"
+
+#: tfjm/permissions.py:11
+msgid "All volunteers"
+msgstr "Toustes les bénévoles"
+
+#: tfjm/permissions.py:12
+msgid "All members of a given tournament"
+msgstr "Toustes les membres d'un tournoi donné"
+
+#: tfjm/permissions.py:13
+msgid "Tournament organizers only"
+msgstr "Organisateur⋅rices du tournoi seulement"
+
+#: tfjm/permissions.py:14
+msgid "Tournament organizers and jury presidents of the tournament"
+msgstr "Organisateur⋅rices du tournoi et président⋅es de jury du tournoi"
+
+#: tfjm/permissions.py:15
+msgid "Jury members of the pool"
+msgstr "Membres du jury de la poule"
+
+#: tfjm/permissions.py:16
+msgid "Jury members and participants of the pool"
+msgstr "Membre du jury et participant⋅es de la poule"
+
+#: tfjm/permissions.py:17
+msgid "Members of the team and organizers of concerned tournaments"
+msgstr "Membres de l'équipe et organisateur⋅rices des tournois concernés"
+
+#: tfjm/permissions.py:18
+msgid "Private, reserved to explicit authorized users"
+msgstr "Privé, réservé aux utilisateur⋅rices explicitement autorisé⋅es"
+
+#: tfjm/permissions.py:19
+msgid "Admin users"
+msgstr "Administrateur⋅rices"
+
+#: tfjm/settings.py:169
 msgid "English"
 msgstr "Anglais"
 
-#: tfjm/settings.py:168
+#: tfjm/settings.py:170
 msgid "French"
 msgstr "Français"
 
@@ -3577,10 +3778,6 @@ msgstr "Mon équipe"
 msgid "My participation"
 msgstr "Ma participation"
 
-#: tfjm/templates/navbar.html:67
-msgid "Chat"
-msgstr "Chat"
-
 #: tfjm/templates/navbar.html:72
 msgid "Administration"
 msgstr "Administration"
@@ -3601,19 +3798,7 @@ msgstr "S'inscrire"
 msgid "My account"
 msgstr "Mon compte"
 
-#: tfjm/templates/navbar.html:115
-msgid "Log out"
-msgstr "Déconnexion"
-
-#: tfjm/templates/registration/logged_out.html:8
-msgid "Thanks for spending some quality time with the Web site today."
-msgstr "Merci d'avoir utilisé la plateforme du TFJM²."
-
-#: tfjm/templates/registration/logged_out.html:9
-msgid "Log in again"
-msgstr "Se reconnecter"
-
-#: tfjm/templates/registration/login.html:13
+#: tfjm/templates/registration/includes/login.html:5
 #, python-format
 msgid ""
 "You are authenticated as %(user)s, but are not authorized to access this "
@@ -3622,14 +3807,22 @@ msgstr ""
 "Vous êtes connecté⋅e en tant que %(user)s, mais n'êtes pas autorisé⋅e à "
 "accéder à cette page. Voulez-vous vous reconnecter avec un autre compte ?"
 
-#: tfjm/templates/registration/login.html:25
+#: tfjm/templates/registration/includes/login.html:17
 msgid "Your username is your e-mail address."
 msgstr "Votre identifiant est votre adresse e-mail."
 
-#: tfjm/templates/registration/login.html:28
+#: tfjm/templates/registration/includes/login.html:20
 msgid "Forgotten your password?"
 msgstr "Mot de passe oublié ?"
 
+#: tfjm/templates/registration/logged_out.html:8
+msgid "Thanks for spending some quality time with the Web site today."
+msgstr "Merci d'avoir utilisé la plateforme du TFJM²."
+
+#: tfjm/templates/registration/logged_out.html:9
+msgid "Log in again"
+msgstr "Se reconnecter"
+
 #: tfjm/templates/search/search.html:6 tfjm/templates/search/search.html:10
 msgid "Search"
 msgstr "Chercher"
@@ -3645,8 +3838,3 @@ msgstr "Aucun résultat."
 #: tfjm/templates/sidebar.html:10 tfjm/templates/sidebar.html:21
 msgid "Informations"
 msgstr "Informations"
-
-#~ msgid "Can't determine the pool size. Are you sure your file is correct?"
-#~ msgstr ""
-#~ "Impossible de déterminer la taille de la poule. Êtes-vous sûr⋅e que le "
-#~ "fichier est correct ?"
diff --git a/participation/templates/participation/chat.html b/participation/templates/participation/chat.html
deleted file mode 100644
index bf47704..0000000
--- a/participation/templates/participation/chat.html
+++ /dev/null
@@ -1,13 +0,0 @@
-{% extends "base.html" %}
-
-{% load i18n %}
-
-{% block content %}
-    <div class="alert alert-warning">
-    {% blocktrans trimmed %}
-        The chat feature is now out of usage. If you feel that having a chat
-        feature between participants is important, for example to build a
-        team, please contact us.
-    {% endblocktrans %}
-    </div>
-{% endblock %}
diff --git a/participation/urls.py b/participation/urls.py
index 4125a4c..2c97587 100644
--- a/participation/urls.py
+++ b/participation/urls.py
@@ -2,7 +2,6 @@
 # SPDX-License-Identifier: GPL-3.0-or-later
 
 from django.urls import path
-from django.views.generic import TemplateView
 
 from .views import CreateTeamView, FinalNotationSheetTemplateView, GSheetNotificationsView, JoinTeamView, \
     MyParticipationDetailView, MyTeamDetailView, NotationSheetsArchiveView, NoteUpdateView, ParticipationDetailView, \
@@ -74,5 +73,4 @@ urlpatterns = [
     path("pools/passages/<int:pk>/update/", PassageUpdateView.as_view(), name="passage_update"),
     path("pools/passages/<int:pk>/solution/", SynthesisUploadView.as_view(), name="upload_synthesis"),
     path("pools/passages/notes/<int:pk>/", NoteUpdateView.as_view(), name="update_notes"),
-    path("chat/", TemplateView.as_view(template_name="participation/chat.html"), name="chat")
 ]
diff --git a/tfjm/asgi.py b/tfjm/asgi.py
index 3bec7e0..417d54e 100644
--- a/tfjm/asgi.py
+++ b/tfjm/asgi.py
@@ -22,13 +22,13 @@ os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'tfjm.settings')
 django_asgi_app = get_asgi_application()
 
 # useful since the import must be done after the application initialization
-import draw.routing  # noqa: E402, I202
+import tfjm.routing  # noqa: E402, I202
 
 application = ProtocolTypeRouter(
     {
         "http": django_asgi_app,
         "websocket": AllowedHostsOriginValidator(
-            AuthMiddlewareStack(URLRouter(draw.routing.websocket_urlpatterns))
+            AuthMiddlewareStack(URLRouter(tfjm.routing.websocket_urlpatterns))
         ),
     }
 )
diff --git a/tfjm/permissions.py b/tfjm/permissions.py
new file mode 100644
index 0000000..f29d5c6
--- /dev/null
+++ b/tfjm/permissions.py
@@ -0,0 +1,19 @@
+# Copyright (C) 2024 by Animath
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+from django.db import models
+from django.utils.translation import gettext_lazy as _
+
+
+class PermissionType(models.TextChoices):
+    ANONYMOUS = 'anonymous', _("Everyone, including anonymous users")
+    AUTHENTICATED = 'authenticated', _("Authenticated users")
+    VOLUNTEER = 'volunteer', _("All volunteers")
+    TOURNAMENT_MEMBER = 'tournament', _("All members of a given tournament")
+    TOURNAMENT_ORGANIZER = 'organizer', _("Tournament organizers only")
+    TOURNAMENT_JURY_PRESIDENT = 'jury_president', _("Tournament organizers and jury presidents of the tournament")
+    JURY_MEMBER = 'jury', _("Jury members of the pool")
+    POOL_MEMBER = 'pool', _("Jury members and participants of the pool")
+    TEAM_MEMBER = 'team', _("Members of the team and organizers of concerned tournaments")
+    PRIVATE = 'private', _("Private, reserved to explicit authorized users")
+    ADMIN = 'admin', _("Admin users")
diff --git a/tfjm/routing.py b/tfjm/routing.py
new file mode 100644
index 0000000..08c54d8
--- /dev/null
+++ b/tfjm/routing.py
@@ -0,0 +1,11 @@
+# Copyright (C) 2024 by Animath
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+import chat.consumers
+from django.urls import path
+import draw.consumers
+
+websocket_urlpatterns = [
+    path("ws/chat/", chat.consumers.ChatConsumer.as_asgi()),
+    path("ws/draw/", draw.consumers.DrawConsumer.as_asgi()),
+]
diff --git a/tfjm/settings.py b/tfjm/settings.py
index c1b98bb..4c6a0e0 100644
--- a/tfjm/settings.py
+++ b/tfjm/settings.py
@@ -68,6 +68,7 @@ INSTALLED_APPS = [
     'rest_framework.authtoken',
 
     'api',
+    'chat',
     'draw',
     'registration',
     'participation',
@@ -101,6 +102,7 @@ MIDDLEWARE = [
 ROOT_URLCONF = 'tfjm.urls'
 
 LOGIN_REDIRECT_URL = "index"
+LOGOUT_REDIRECT_URL = "login"
 
 TEMPLATES = [
     {
diff --git a/tfjm/settings_prod.py b/tfjm/settings_prod.py
index d7f48b8..2024aeb 100644
--- a/tfjm/settings_prod.py
+++ b/tfjm/settings_prod.py
@@ -27,7 +27,7 @@ SESSION_COOKIE_SECURE = False
 CSRF_COOKIE_SECURE = False
 CSRF_COOKIE_HTTPONLY = False
 X_FRAME_OPTIONS = 'DENY'
-SESSION_COOKIE_AGE = 60 * 60 * 3
+SESSION_COOKIE_AGE = 60 * 60 * 24 * 7 * 2  # 2 weeks
 
 CHANNEL_LAYERS = {
     "default": {
diff --git a/tfjm/static/tfjm-192.png b/tfjm/static/tfjm-192.png
new file mode 100644
index 0000000..a212e44
Binary files /dev/null and b/tfjm/static/tfjm-192.png differ
diff --git a/tfjm/static/tfjm-512.png b/tfjm/static/tfjm-512.png
new file mode 100644
index 0000000..5be044a
Binary files /dev/null and b/tfjm/static/tfjm-512.png differ
diff --git a/tfjm/static/tfjm-square.svg b/tfjm/static/tfjm-square.svg
new file mode 100644
index 0000000..7e76588
--- /dev/null
+++ b/tfjm/static/tfjm-square.svg
@@ -0,0 +1,91 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<svg
+   xmlns:dc="http://purl.org/dc/elements/1.1/"
+   xmlns:cc="http://creativecommons.org/ns#"
+   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+   xmlns:svg="http://www.w3.org/2000/svg"
+   xmlns="http://www.w3.org/2000/svg"
+   xmlns:xlink="http://www.w3.org/1999/xlink"
+   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
+   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
+   viewBox="0 0 32 32"
+   version="1.1"
+   id="svg27"
+   sodipodi:docname="logo.svg"
+   width="32"
+   height="32"
+   inkscape:version="0.92.2 2405546, 2018-03-11">
+  <style>
+    path {
+      fill: black;
+    }
+  </style>
+  <metadata
+     id="metadata31">
+    <rdf:RDF>
+      <cc:Work
+         rdf:about="">
+        <dc:format>image/svg+xml</dc:format>
+        <dc:type
+           rdf:resource="http://purl.org/dc/dcmitype/StillImage" />
+        <dc:title></dc:title>
+      </cc:Work>
+    </rdf:RDF>
+  </metadata>
+  <defs
+     id="defs15">
+    <path
+       id="b"
+       d="m 2.58,-3.347 c 0.409,0 1.405,0.02 1.485,1.135 0.01,0.12 0.02,0.25 0.18,0.25 0.168,0 0.168,-0.14 0.168,-0.32 v -2.7 c 0,-0.159 0,-0.318 -0.169,-0.318 -0.13,0 -0.17,0.1 -0.18,0.21 -0.059,1.155 -0.756,1.354 -1.484,1.384 v -2.102 c 0,-0.668 0.19,-0.668 0.429,-0.668 h 0.468 c 1.275,0 1.923,0.688 1.983,1.375 0.01,0.08 0.02,0.23 0.179,0.23 0.17,0 0.17,-0.16 0.17,-0.33 v -1.295 c 0,-0.308 -0.02,-0.328 -0.33,-0.328 h -5 c -0.18,0 -0.34,0 -0.34,0.179 0,0.17 0.19,0.17 0.27,0.17 0.567,0 0.607,0.079 0.607,0.567 v 4.991 c 0,0.469 -0.03,0.568 -0.558,0.568 -0.15,0 -0.319,0 -0.319,0.17 C 0.14,0 0.3,0 0.48,0 h 2.878 c 0.18,0 0.33,0 0.33,-0.18 0,-0.169 -0.17,-0.169 -0.3,-0.169 -0.767,0 -0.807,-0.07 -0.807,-0.597 v -2.401 z m 2.88,-3.129 v 0.469 A 2.557,2.557 0 0 0 4.922,-6.476 Z M 4.065,-3.158 A 1.51,1.51 0 0 0 3.537,-3.547 c 0.189,-0.09 0.388,-0.249 0.528,-0.418 z m -2.7,-2.77 c 0,-0.12 0,-0.368 -0.08,-0.548 h 1.056 c -0.11,0.23 -0.11,0.558 -0.11,0.648 v 4.901 c 0,0.15 0,0.389 0.1,0.578 H 1.285 c 0.08,-0.179 0.08,-0.428 0.08,-0.548 v -5.03 z" />
+    <path
+       id="c"
+       d="m 1.564,-6.824 c -0.18,0 -0.339,0 -0.339,0.179 0,0.17 0.18,0.17 0.29,0.17 0.687,0 0.727,0.069 0.727,0.577 v 5.59 c 0,0.169 0,0.358 -0.17,0.527 -0.08,0.07 -0.239,0.18 -0.478,0.18 -0.07,0 -0.369,0 -0.369,-0.11 0,-0.08 0.04,-0.12 0.09,-0.17 A 0.704,0.704 0 0 0 0.777,-1.057 0.704,0.704 0 0 0 0.06,-0.359 c 0,0.629 0.637,1.106 1.604,1.106 1.106,0 2.042,-0.387 2.192,-1.614 0.01,-0.09 0.01,-0.647 0.01,-0.966 v -4.184 c 0,-0.449 0.139,-0.449 0.707,-0.459 0.09,0 0.17,-0.08 0.17,-0.17 0,-0.178 -0.15,-0.178 -0.33,-0.178 z M 0.867,0.239 C 0.767,0.19 0.408,0.02 0.408,-0.349 c 0,-0.259 0.22,-0.358 0.37,-0.358 0.168,0 0.368,0.12 0.368,0.348 0,0.15 -0.08,0.24 -0.12,0.27 -0.04,0.04 -0.13,0.139 -0.16,0.328 z M 2.59,-5.918 c 0,-0.11 0,-0.378 -0.09,-0.558 h 1.097 c -0.08,0.18 -0.08,0.369 -0.08,0.708 v 4.015 c 0,0.298 0,0.797 -0.01,0.896 C 3.427,-0.349 3.198,0.11 2.44,0.31 2.59,0.08 2.59,-0.109 2.59,-0.288 v -5.629 z" />
+    <path
+       id="d"
+       d="M 4.643,-2.092 2.74,-6.625 c -0.08,-0.2 -0.09,-0.2 -0.359,-0.2 H 0.528 c -0.18,0 -0.329,0 -0.329,0.18 0,0.17 0.18,0.17 0.23,0.17 0.119,0 0.388,0.02 0.607,0.099 v 5.32 c 0,0.21 0,0.648 -0.677,0.707 -0.19,0.02 -0.19,0.16 -0.19,0.17 C 0.17,0 0.33,0 0.51,0 h 1.543 c 0.18,0 0.33,0 0.33,-0.18 0,-0.089 -0.08,-0.159 -0.16,-0.169 -0.767,-0.06 -0.767,-0.478 -0.767,-0.707 v -4.961 l 0.01,-0.01 2.429,5.817 c 0.08,0.18 0.15,0.209 0.21,0.209 0.12,0 0.149,-0.08 0.199,-0.2 l 2.44,-5.827 0.01,0.01 v 4.961 c 0,0.21 0,0.648 -0.677,0.707 -0.19,0.02 -0.19,0.16 -0.19,0.17 0,0.179 0.16,0.179 0.34,0.179 h 2.66 c 0.179,0 0.328,0 0.328,-0.18 C 9.215,-0.27 9.135,-0.34 9.056,-0.35 8.289,-0.41 8.289,-0.828 8.289,-1.057 v -4.712 c 0,-0.21 0,-0.648 0.677,-0.708 0.1,-0.01 0.19,-0.06 0.19,-0.17 0,-0.178 -0.15,-0.178 -0.33,-0.178 H 6.905 c -0.259,0 -0.279,0 -0.369,0.209 z m -0.3,0.18 c 0.08,0.169 0.09,0.178 0.21,0.218 L 4.115,-0.638 H 4.095 L 1.823,-6.058 C 1.773,-6.187 1.693,-6.356 1.554,-6.476 h 0.867 l 1.923,4.563 z M 1.336,-0.35 h -0.17 c 0.02,-0.03 0.04,-0.06 0.06,-0.08 0.01,-0.01 0.01,-0.02 0.02,-0.03 z M 7.104,-6.477 H 8.16 c -0.219,0.25 -0.219,0.508 -0.219,0.688 v 4.752 c 0,0.18 0,0.438 0.23,0.687 H 6.883 c 0.22,-0.249 0.22,-0.508 0.22,-0.687 v -5.44 z" />
+    <path
+       id="a"
+       d="m 4.135,-6.466 c 1.305,0.07 1.793,0.917 1.833,1.385 0.01,0.15 0.02,0.299 0.179,0.299 0.18,0 0.18,-0.17 0.18,-0.359 v -1.325 c 0,-0.348 -0.04,-0.358 -0.34,-0.358 H 0.658 c -0.308,0 -0.328,0.02 -0.328,0.318 V -5.1 c 0,0.16 0,0.319 0.17,0.319 0.17,0 0.178,-0.18 0.178,-0.2 0.04,-0.826 0.788,-1.424 1.834,-1.484 v 5.54 c 0,0.498 -0.04,0.577 -0.668,0.577 -0.12,0 -0.299,0 -0.299,0.17 0,0.179 0.16,0.179 0.339,0.179 h 2.89 C 4.95,0 5.1,0 5.1,-0.18 c 0,-0.169 -0.17,-0.169 -0.28,-0.169 -0.647,0 -0.686,-0.07 -0.686,-0.578 v -5.539 z m -3.458,-0.01 h 0.598 c -0.249,0.15 -0.458,0.349 -0.598,0.518 z m 5.3,0 v 0.528 A 2.606,2.606 0 0 0 5.37,-6.476 H 5.978 Z M 2.77,-0.349 c 0.09,-0.179 0.09,-0.428 0.09,-0.558 v -5.569 h 0.926 v 5.57 c 0,0.129 0,0.378 0.09,0.557 H 2.77 Z" />
+    <path
+       id="e"
+       d="M 3.522,-1.27 H 3.285 c -0.021,0.154 -0.091,0.566 -0.182,0.635 -0.055,0.042 -0.592,0.042 -0.69,0.042 H 1.13 c 0.732,-0.648 0.976,-0.844 1.395,-1.171 0.516,-0.412 0.997,-0.844 0.997,-1.507 0,-0.844 -0.74,-1.36 -1.632,-1.36 -0.865,0 -1.45,0.607 -1.45,1.249 0,0.355 0.3,0.39 0.369,0.39 0.167,0 0.37,-0.118 0.37,-0.37 0,-0.125 -0.05,-0.369 -0.412,-0.369 0.216,-0.495 0.69,-0.649 1.018,-0.649 0.698,0 1.06,0.544 1.06,1.11 0,0.606 -0.432,1.087 -0.655,1.338 l -1.68,1.66 C 0.44,-0.209 0.44,-0.195 0.44,0 h 2.873 z" />
+  </defs>
+  <rect width="100%" height="100%"
+        rx="10px" ry="10px" stroke-linejoin="round"
+        style="fill: white;" />
+  <use
+     x="0.5"
+     y="19.5"
+     xlink:href="#a"
+     id="use17"
+     width="100%"
+     height="100%" />
+  <use
+     x="7.5"
+     y="19.5"
+     xlink:href="#b"
+     id="use19"
+     width="100%"
+     height="100%" />
+  <use
+     x="13"
+     y="19.5"
+     xlink:href="#c"
+     id="use21"
+     width="100%"
+     height="100%" />
+  <use
+     x="18"
+     y="19.5"
+     xlink:href="#d"
+     id="use23"
+     width="100%"
+     height="100%" />
+  <use
+     x="27"
+     y="14"
+     xlink:href="#e"
+     id="use25"
+     width="100%"
+     height="100%" />
+</svg>
diff --git a/tfjm/templates/base.html b/tfjm/templates/base.html
index f272bd7..da1cff5 100644
--- a/tfjm/templates/base.html
+++ b/tfjm/templates/base.html
@@ -40,18 +40,18 @@
 <body class="d-flex w-100 h-100 flex-column">
 {% include "navbar.html" %}
 
-<div id="body-wrapper" class="row w-100 my-3">
+<div id="body-wrapper" class="row w-100 my-3 flex-grow-1">
     <aside class="col-lg-2 px-2">
         {% include "sidebar.html" %}
     </aside>
 
-    <main class="col d-flex flex-column">
-        <div class="container">
+    <main class="col d-flex flex-column flex-grow-1">
+        <div class="container d-flex flex-column flex-grow-1">
             {% block content-title %}<h1 id="content-title">{{ title }}</h1>{% endblock %}
 
             {% include "messages.html" %}
 
-            <div id="content">
+            <div id="content" class="d-flex flex-column flex-grow-1">
                 {% block content %}
                     <p>Default content...</p>
                 {% endblock content %}
diff --git a/tfjm/templates/navbar.html b/tfjm/templates/navbar.html
index 8e0115d..e012871 100644
--- a/tfjm/templates/navbar.html
+++ b/tfjm/templates/navbar.html
@@ -61,12 +61,12 @@
                         </a>
                     </li>
                 {% endif %}
+                <li class="nav-item active">
+                    <a class="nav-link" href="{% url "chat:chat" %}">
+                        <i class="fas fa-comments"></i> {% trans "Chat" %}
+                    </a>
+                </li>
             {% endif %}
-            <li class="nav-item active d-none">
-                <a class="nav-link" href="{% url "participation:chat" %}">
-                    <i class="fas fa-comments"></i> {% trans "Chat" %}
-                </a>
-            </li>
             {% if user.registration.is_admin %}
                 <li class="nav-item active">
                     <a class="nav-link" href="{% url "admin:index" %}"><i class="fas fa-cog"></i> {% trans "Administration" %}</a>
@@ -111,9 +111,12 @@
                             </a>
                         </li>
                         <li>
-                            <a class="dropdown-item" href="{% url "logout" %}">
-                                <i class="fas fa-sign-out-alt"></i> {% trans "Log out" %}
-                            </a>
+                            <form action="{% url 'logout' %}" method="post">
+                                {% csrf_token %}
+                                <button class="dropdown-item">
+                                    <i class="fas fa-sign-out-alt"></i> {% trans "Log out" %}
+                                </button>
+                            </form>
                         </li>
                     </ul>
                 </li>
diff --git a/tfjm/templates/registration/includes/login.html b/tfjm/templates/registration/includes/login.html
new file mode 100644
index 0000000..1ae3348
--- /dev/null
+++ b/tfjm/templates/registration/includes/login.html
@@ -0,0 +1,23 @@
+{% load i18n crispy_forms_filters %}
+
+{% if user.is_authenticated %}
+    <p class="errornote">
+        {% blocktrans trimmed %}
+            You are authenticated as {{ user }}, but are not authorized to
+            access this page. Would you like to login to a different account?
+        {% endblocktrans %}
+    </p>
+{% endif %}
+<form method="post" id="login-form">
+    <div id="form-content">
+        {{ form|as_crispy_errors }}
+        {% csrf_token %}
+        {{ form.username|as_crispy_field }}
+        <div class="form-text mb-3">
+            <i class="fas fa-info-circle"></i> {% trans "Your username is your e-mail address." %}
+        </div>
+        {{ form.password|as_crispy_field }}
+        <a href="{% url 'password_reset' %}" class="badge text-bg-warning">{% trans 'Forgotten your password?' %}</a>
+    </div>
+    <input type="submit" value="{% trans 'Log in' %}" class="btn btn-primary">
+</form>
\ No newline at end of file
diff --git a/tfjm/templates/registration/login.html b/tfjm/templates/registration/login.html
index f033a0b..2695aa0 100644
--- a/tfjm/templates/registration/login.html
+++ b/tfjm/templates/registration/login.html
@@ -2,31 +2,11 @@
 {% comment %}
 SPDX-License-Identifier: GPL-2.0-or-later
 {% endcomment %}
-{% load i18n crispy_forms_filters %}
+{% load i18n %}
 
 {% block title %}{% trans "Log in" %}{% endblock %}
 {% block content-title %}<h1>{% trans "Log in" %}</h1>{% endblock %}
 
 {% block content %}
-    {% if user.is_authenticated %}
-        <p class="errornote">
-            {% blocktrans trimmed %}
-                You are authenticated as {{ user }}, but are not authorized to
-                access this page. Would you like to login to a different account?
-            {% endblocktrans %}
-        </p>
-    {% endif %}
-    <form method="post" id="login-form">
-        <div id="form-content">
-            {{ form|as_crispy_errors }}
-            {% csrf_token %}
-            {{ form.username|as_crispy_field }}
-            <div class="form-text mb-3">
-                <i class="fas fa-info-circle"></i> {% trans "Your username is your e-mail address." %}
-            </div>
-            {{ form.password|as_crispy_field }}
-            <a href="{% url 'password_reset' %}" class="badge text-bg-warning">{% trans 'Forgotten your password?' %}</a>
-        </div>
-        <input type="submit" value="{% trans 'Log in' %}" class="btn btn-primary">
-    </form>
+    {% include "registration/includes/login.html" %}
 {% endblock %}
diff --git a/tfjm/urls.py b/tfjm/urls.py
index 1185dbc..c506456 100644
--- a/tfjm/urls.py
+++ b/tfjm/urls.py
@@ -37,6 +37,7 @@ urlpatterns = [
     path('search/', AdminSearchView.as_view(), name="haystack_search"),
 
     path('api/', include('api.urls')),
+    path('chat/', include('chat.urls')),
     path('draw/', include('draw.urls')),
     path('participation/', include('participation.urls')),
     path('registration/', include('registration.urls')),
diff --git a/tfjm/views.py b/tfjm/views.py
index 6ccea34..64ae580 100644
--- a/tfjm/views.py
+++ b/tfjm/views.py
@@ -3,6 +3,7 @@
 
 from django.contrib.auth.mixins import LoginRequiredMixin
 from django.contrib.auth.models import User
+from django.views.generic import TemplateView
 from haystack.generic_views import SearchView
 
 
@@ -40,5 +41,9 @@ class UserRegistrationMixin(LoginRequiredMixin):
         return super().dispatch(request, *args, **kwargs)
 
 
+class LoginRequiredTemplateView(LoginRequiredMixin, TemplateView):
+    pass
+
+
 class AdminSearchView(AdminMixin, SearchView):
     pass
diff --git a/tox.ini b/tox.ini
index aa524c4..521eccb 100644
--- a/tox.ini
+++ b/tox.ini
@@ -13,7 +13,7 @@ deps = coverage
 
 commands =
     python manage.py compilemessages -i .tox -i venv
-    coverage run --source=api,draw,logs,participation,registration,tfjm ./manage.py test api/ draw/ logs/ participation/ registration/ tfjm/
+    coverage run --source=api,draw,logs,participation,registration,tfjm ./manage.py test api/ chat/ draw/ logs/ participation/ registration/ tfjm/
     coverage report -m
 
 [testenv:linters]
@@ -26,7 +26,7 @@ deps =
     pep8-naming
     pyflakes
 commands =
-    flake8 api/ draw/ logs/ participation/ registration/ tfjm/
+    flake8 api/ chat/ draw/ logs/ participation/ registration/ tfjm/
 
 [flake8]
 exclude =